2GNT.com Forums - Viewing topic - How much boost SHOULD I be running?

Home Site Background Info & Specs Mods & Tech Info CAPS Part Reviews Donate 2GNT Stickers

Printer-friendly copy

1 User in Chat

Top

2GNT Technical

Turbo/Nitrous Tech

topic #66954

View in linear mode

Subject: "How much boost SHOULD I be running?"

Previous topic | Next topic

GhEttOrAiD	Mar-12-04 04:42 PM
Member since Oct 22nd 2002 1226 posts,

#66954, "How much boost SHOULD I be running?"
Mar-12-04 04:42 PM by GhEttOrAiD

Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

I've got 8.5:1 .020 over Wiseco Pistons, Eagle rods, Vortech FMU with an unknown ratio (I have 4:1 sitting in a box ready to be put in whenever i have money).. New stock fuel pump and filter, stock? injectors (I assume...)... T3/T4 of some kind... HKS Super AFR+EVC4, Star FMIC, thats all I can think of that should be pertinent...

I WAS running 8psi/10psi... however I don't know if this was safe... So I recently stepped it back to 5psi because... I'm paranoid and wanted to make this thread... LOL

Always use at least 91oct... right now i have 5 gallons of 100 in there... bringing me to 93.5.. :\

Anyway... thanks in advance... and again yes I am retarded/severely misinformed.

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic

RE: How much boost SHOULD I be running?, MrSlick, Mar-12-04 04:55 PM, #1

RE: How much boost SHOULD I be running?, eclipse_99rs, Mar-12-04 06:06 PM, #2

RE: How much boost SHOULD I be running?, jsupetran, Mar-12-04 06:13 PM, #3

RE: How much boost SHOULD I be running?, GhEttOrAiD, Mar-13-04 03:41 AM, #4

RE: How much boost SHOULD I be running?, jsupetran, Mar-13-04 04:15 AM, #5

RE: How much boost SHOULD I be running?, GhEttOrAiD, Mar-13-04 04:22 AM, #6

RE: How much boost SHOULD I be running?, jsupetran, Mar-13-04 04:33 AM, #7

MrSlick	Mar-12-04 04:55 PM
Member since Jul 22nd 2002 1120 posts,

#66955, "RE: How much boost SHOULD I be running?"
In response to Reply # 0

How much do you want to be running? emoji

There's no real amount you should be running... just run as high as you safelly can... unless your retarded like me and like to push the envelope.... emoji

You shouldn't really run any higher until you have more knowledge of your setup... like what injector size and FMU ratio for a start...
Get a fuel pressure guage and egt guage also... and AFR obviously.

Unknowns can ruin your day in no time...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Megasquirt powered 420A
Custom turbo system

http://www.ms-custom.com

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

eclipse_99rs	Mar-12-04 06:06 PM
Member since Apr 11th 2002 2659 posts,

#66957, "RE: How much boost SHOULD I be running?"
In response to Reply # 1

well it looks like the weakest link in the setup is the stock fuel pump. I think you could do 7-8 psi no prob. hell i spray a 75 shot on stock just about everything.

myspace.com/coastiecobb

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

jsupetran	Mar-12-04 06:13 PM
Member since May 04th 2002 4359 posts,

#66958, "RE: How much boost SHOULD I be running?"
In response to Reply # 0
Mar-12-04 06:18 PM by jsupetran

Originally posted by GhEttOrAiD
Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

I've got 8.5:1 .020 over Wiseco Pistons, Eagle rods, Vortech FMU with an unknown ratio (I have 4:1 sitting in a box ready to be put in whenever i have money).. New stock fuel pump and filter, stock? injectors (I assume...)... T3/T4 of some kind... HKS Super AFR+EVC4, Star FMIC, thats all I can think of that should be pertinent... I WAS running 8psi/10psi... however I don't know if this was safe... So I recently stepped it back to 5psi because... I'm paranoid and wanted to make this thread... LOL Always use at least 91oct... right now i have 5 gallons of 100 in there... bringing me to 93.5.. :\ Anyway... thanks in advance... and again yes I am retarded/severely misinformed.

Well, judging from your engine, you are capable of big numbers really (I wish I had your motor). BUTT, and this is one big ass, if I were you I'd get everything set up to ensure my engine last (yes, even forge internals can detonate, ask dave_fl!!!).

Get your fuel squared away and confirmed. I have no friggin clue what goes into the fmu and the ratio but figure out your injector size first. The stock injectors are being put to its limit at 8 psi (your getting about 110 psi of fuel –NOT GOOD – pressure at that boost level; that is twice as much flow the stock injectors usually are built to run).

Get gauges galore... egt, apexi tt (with the af function), fuel pressure gauge.
Stock fuel pump is not enough fuel if your not running an inline fuel pump as well (like the hahn kits) so get the walbro hi flow fuel pump.

Not knowing what your running is not good, so figure that out before you go insane with boost. Upgrade to bigger injectors if I was you... but make sure to get the hiflow fuel pump (only 100) before the injectors, then the gauges.

-------jezreel
hrc stage 1, sfmu, ml, prokits, egt, boost gauge, apexi tt, turbo xs rfl, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

GhEttOrAiD	Mar-13-04 03:41 AM
Member since Oct 22nd 2002 1226 posts,

#66965, "RE: How much boost SHOULD I be running?"
In response to Reply # 3
Mar-13-04 03:44 AM by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

Well, judging from your engine, you are capable of big numbers really (I wish I had your motor). BUTT, and this is one big ass, if I were you I'd get everything set up to ensure my engine last (yes, even forge internals can detonate, ask dave_fl!!!). Get your fuel squared away and confirmed. I have no friggin clue what goes into the fmu and the ratio but figure out your injector size first. The stock injectors are being put to its limit at 8 psi (your getting about 110 psi of fuel NOT GOOD pressure at that boost level; that is twice as much flow the stock injectors usually are built to run). Get gauges galore... egt, apexi tt (with the af function), fuel pressure gauge. Stock fuel pump is not enough fuel if your not running an inline fuel pump as well (like the hahn kits) so get the walbro hi flow fuel pump. Not knowing what your running is not good, so figure that out before you go insane with boost. Upgrade to bigger injectors if I was you... but make sure to get the hiflow fuel pump (only 100) before the injectors, then the gauges.

Yeah I've got Venom 550's sitting in the same box as the recalibration kit...

Is it mandatory that I have an _S_fmu? I just have the universal fmu...

Definitely agree on the gauges though... hmm

Oh I do have the apexi TT just don't know how to program it to give me numbers... just shows --:-- when I go to O2... when its set to AF/o2 though it gives me a readout... I just dont know wtf it means!!

My shop tells me that walbro, while cheap, is trash. Say that I should get a Supra TT pump for its reliability/quietness

FS: 2.5" Test Pipe 25 shipped

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

jsupetran	Mar-13-04 04:15 AM
Member since May 04th 2002 4359 posts,

#66966, "RE: How much boost SHOULD I be running?"
In response to Reply # 4
Mar-13-04 04:17 AM by jsupetran

Originally posted by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

Well, judging from your engine, you are capable of big numbers really (I wish I had your motor). BUTT, and this is one big ass, if I were you I'd get everything set up to ensure my engine last (yes, even forge internals can detonate, ask dave_fl!!!). Get your fuel squared away and confirmed. I have no friggin clue what goes into the fmu and the ratio but figure out your injector size first. The stock injectors are being put to its limit at 8 psi (your getting about 110 psi of fuel NOT GOOD pressure at that boost level; that is twice as much flow the stock injectors usually are built to run). Get gauges galore... egt, apexi tt (with the af function), fuel pressure gauge. Stock fuel pump is not enough fuel if your not running an inline fuel pump as well (like the hahn kits) so get the walbro hi flow fuel pump. Not knowing what your running is not good, so figure that out before you go insane with boost. Upgrade to bigger injectors if I was you... but make sure to get the hiflow fuel pump (only 100) before the injectors, then the gauges.

Yeah I've got Venom 550's sitting in the same box as the recalibration kit... Is it mandatory that I have an _S_fmu? I just have the universal fmu... Definitely agree on the gauges though... hmm Oh I do have the apexi TT just don't know how to program it to give me numbers... just shows --:-- when I go to O2... when its set to AF/o2 though it gives me a readout... I just dont know wtf it means!! My shop tells me that walbro, while cheap, is trash. Say that I should get a Supra TT pump for its reliability/quietness

For the a/f readings, do an advanced search since you are built, because you can afford to be "less rich" in fuel then us stock bottom end guys. We (who have a stock bottom end) tend to stay in the .96 range. I don't really know exactly how lean in a/f you can be if your built, but .96 is good for now. As for the 02, when it shows the --:--, has your car been running for at least the 5 min? The 02 sensor needs to be warmed up to start reading the 02 signals...

As for the sfmu, it's not mandatory. You can definetly run the fmu, but I just don't know much about the fmu, and all the ratios and crap for it so can't help you there.

For the fuel pump, the point is, JUST GET A HI FLOW FUEL PUMP. Stock fuel pumps can't flow enough with boost. Why do you think the star kits come with an aftermarket hi flow pump, or the hahn has the accel in line fuel pump, in order to "help" the stock fuel pump flow enough fuel.

-------jezreel
hrc stage 1, sfmu, ml, prokits, egt, boost gauge, apexi tt, turbo xs rfl, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

GhEttOrAiD	Mar-13-04 04:22 AM
Member since Oct 22nd 2002 1226 posts,

#66967, "RE: How much boost SHOULD I be running?"
In response to Reply # 5
Mar-13-04 04:23 AM by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

Well, judging from your engine, you are capable of big numbers really (I wish I had your motor). BUTT, and this is one big ass, if I were you I'd get everything set up to ensure my engine last (yes, even forge internals can detonate, ask dave_fl!!!). Get your fuel squared away and confirmed. I have no friggin clue what goes into the fmu and the ratio but figure out your injector size first. The stock injectors are being put to its limit at 8 psi (your getting about 110 psi of fuel NOT GOOD pressure at that boost level; that is twice as much flow the stock injectors usually are built to run). Get gauges galore... egt, apexi tt (with the af function), fuel pressure gauge. Stock fuel pump is not enough fuel if your not running an inline fuel pump as well (like the hahn kits) so get the walbro hi flow fuel pump. Not knowing what your running is not good, so figure that out before you go insane with boost. Upgrade to bigger injectors if I was you... but make sure to get the hiflow fuel pump (only 100) before the injectors, then the gauges.

Yeah I've got Venom 550's sitting in the same box as the recalibration kit... Is it mandatory that I have an _S_fmu? I just have the universal fmu... Definitely agree on the gauges though... hmm Oh I do have the apexi TT just don't know how to program it to give me numbers... just shows --:-- when I go to O2... when its set to AF/o2 though it gives me a readout... I just dont know wtf it means!! My shop tells me that walbro, while cheap, is trash. Say that I should get a Supra TT pump for its reliability/quietness

For the a/f readings, do an advanced search since you are built, because you can afford to be "less rich" in fuel then us stock bottom end guys. We (who have a stock bottom end) tend to stay in the .96 range. I don't really know exactly how lean in a/f you can be if your built, but .96 is good for now. As for the 02, when it shows the --:--, has your car been running for at least the 5 min? The 02 sensor needs to be warmed up to start reading the 02 signals... As for the sfmu, it's not mandatory. You can definetly run the fmu, but I just don't know much about the fmu, and all the ratios and crap for it so can't help you there. For the fuel pump, the point is, JUST GET A HI FLOW FUEL PUMP. Stock fuel pumps can't flow enough with boost. Why do you think the star kits come with an aftermarket hi flow pump, or the hahn has the accel in line fuel pump, in order to "help" the stock fuel pump flow enough fuel.

I don't know what I had when I purchased the car, I just know it was noisy as hell. my former shop just said it "sounded bad" so I told them to replace it.. .No clue what it actually was...

The manual for the TT says I have to tune it whilst on a dyno... it seems to show the --:-- no matter when I try... apexi site is down so i can't be more specific

Long time ago I asked what I needed to boost a lot more, one of the things I was told = 4:1 recalibration kit.. so I've got that.. heh.

Is there any difference which EGT I go for? I would almost rather it be digital so that I can tell exactly where I am, a lot faster than with an analog one...

FS: 2.5" Test Pipe 25 shipped

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

jsupetran	Mar-13-04 04:33 AM
Member since May 04th 2002 4359 posts,

#66968, "RE: How much boost SHOULD I be running?"
In response to Reply # 6

Originally posted by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD

Originally posted by jsupetran

Originally posted by GhEttOrAiD Ok this is like.. the eighth "emberassing" / retard post I've had to make... but I'm only doing it for the sake of my motor, so just spare me any trash talk emoji

Well, judging from your engine, you are capable of big numbers really (I wish I had your motor). BUTT, and this is one big ass, if I were you I'd get everything set up to ensure my engine last (yes, even forge internals can detonate, ask dave_fl!!!). Get your fuel squared away and confirmed. I have no friggin clue what goes into the fmu and the ratio but figure out your injector size first. The stock injectors are being put to its limit at 8 psi (your getting about 110 psi of fuel NOT GOOD pressure at that boost level; that is twice as much flow the stock injectors usually are built to run). Get gauges galore... egt, apexi tt (with the af function), fuel pressure gauge. Stock fuel pump is not enough fuel if your not running an inline fuel pump as well (like the hahn kits) so get the walbro hi flow fuel pump. Not knowing what your running is not good, so figure that out before you go insane with boost. Upgrade to bigger injectors if I was you... but make sure to get the hiflow fuel pump (only 100) before the injectors, then the gauges.

Yeah I've got Venom 550's sitting in the same box as the recalibration kit... Is it mandatory that I have an _S_fmu? I just have the universal fmu... Definitely agree on the gauges though... hmm Oh I do have the apexi TT just don't know how to program it to give me numbers... just shows --:-- when I go to O2... when its set to AF/o2 though it gives me a readout... I just dont know wtf it means!! My shop tells me that walbro, while cheap, is trash. Say that I should get a Supra TT pump for its reliability/quietness

For the a/f readings, do an advanced search since you are built, because you can afford to be "less rich" in fuel then us stock bottom end guys. We (who have a stock bottom end) tend to stay in the .96 range. I don't really know exactly how lean in a/f you can be if your built, but .96 is good for now. As for the 02, when it shows the --:--, has your car been running for at least the 5 min? The 02 sensor needs to be warmed up to start reading the 02 signals... As for the sfmu, it's not mandatory. You can definetly run the fmu, but I just don't know much about the fmu, and all the ratios and crap for it so can't help you there. For the fuel pump, the point is, JUST GET A HI FLOW FUEL PUMP. Stock fuel pumps can't flow enough with boost. Why do you think the star kits come with an aftermarket hi flow pump, or the hahn has the accel in line fuel pump, in order to "help" the stock fuel pump flow enough fuel.

I don't know what I had when I purchased the car, I just know it was noisy as hell. my former shop just said it "sounded bad" so I told them to replace it.. .No clue what it actually was... The manual for the TT says I have to tune it whilst on a dyno... it seems to show the --:-- no matter when I try... apexi site is down so i can't be more specific Long time ago I asked what I needed to boost a lot more, one of the things I was told = 4:1 recalibration kit.. so I've got that.. heh. Is there any difference which EGT I go for? I would almost rather it be digital so that I can tell exactly where I am, a lot faster than with an analog one...

Even if the car's warmed up, it still blank? emoji

I have no clue... Email apexi or something...

For egt's doesn't matter really if you get an analog or digital. Just a preference.

-------jezreel
hrc stage 1, sfmu, ml, prokits, egt, boost gauge, apexi tt, turbo xs rfl, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting

Report This Post to Admin

Printer-friendly copy | Reply | Reply with quote | Top

Top

2GNT Technical

Turbo/Nitrous Tech

topic #66954

Previous topic | Next topic

Generated in 0.065 seconds, executing 28 queries.