If you look at my signature below you will see the mods that I have. Basically its the Hahn stage 1, 5psi, Apexi n1, 2.5" custom downpipe and stock cat. My question is what kind of power would I see from putting a strait pipe on my car or a high flow cat. I also plan to get a fmic some time after I get my tax return so that and boosting say 8-9psi what am I looking at ballpark. I know every car is different but just looking for a general idea how effective a strait pipe is when you push low lbs of boost. Will I hear the turbo spooling alot louder too?

98' Eclipse GS- Hahn Stage 2- SOLD
02' Honda S2000- SOLD
04' Acura TL- Current Whip

Most don't respond to benchracing posts, but here goes.

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- 05 Subaru STi
- 97 eclipse gs (289whp w/ 276tq)

When I got the 3" dump and exhaust I could really hear the turbo at like 3K rpms up. It just whistled and sounded really sick. lol

HP is hard to guess but it will FEEL opened up for sure.

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

How effective is only going to be measured on a dyno and with data logging.

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BPU'd skittle

How do I get a dump tube done. Can I even do that with a internally wastegated turbo setup such as hahn. Just have them weld in a pipe off of my down pipe going to the atmosphere? Any other pointers on things to do. The engine will not be rebuilt for quite some time given my location and my current status its just not possible in the near future. So any performance upgrades to help out the turbo setup on a stock block is greatly appreciated along with incite on how these different mods have been for you.

98' Eclipse GS- Hahn Stage 2- SOLD
02' Honda S2000- SOLD
04' Acura TL- Current Whip

I dont think he was talking about a wastegate. I believe what Blizare was refering to is a device that opens up your exhaust "at the flip of a switch" just before the cat. This has nothing to do with wether you have internal or external wastegate.

Hope that helps!

I'm a novice listen to what I say and make your own conclusion.

Well I plan to do a test pipe now my question is should I do a 2.5" or 3" I have a 2.5" downpipe up until the cat then I have the stock cat onto the 3" apexi n1.

98' Eclipse GS- Hahn Stage 2- SOLD
02' Honda S2000- SOLD
04' Acura TL- Current Whip

When it comes to turbo cars, the larger is usually the better. The spool of the turbo comes from the pressure differential before and after the turbo. A larger exhaust enhances this pressure differential and thus the turbo spools quicker.

On a N/A car, the exhaust rule of thumb is not always bigger is better since it's based on velocity, not pressure differential. If you have a huge pipe, the velocity goes down and the low end power with it.

My suggestion is that you put as much 3 inch on your car as you can afford.

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

yea i hosted someones pics of their dump tube a while ago, let me see if i still have them, i forgot who's car this is but yea

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http://www.dsmregistry.com/detail.php?carid=1133
*form follows function*

Where did you get that dump tube blackmagic? I like that alot so you have what a high flow cat but the dump tube before the cat if you really want to open it up? I like that alot something for me to look into getting if you can hook me up with some info.

98' Eclipse GS- Hahn Stage 2- SOLD
02' Honda S2000- SOLD
04' Acura TL- Current Whip

Most dump tubes are used in reference to Wastegates. What you are looking at in those pics is a QTP electronic cutout. QTEC.

http://www.quicktimeperformance.com/QTEC/

Altough I have heard several horror stories with that company and their level of quality. There have been stories of those motors burning out rather quickly.

I prefer and use the Mccord Powerplate.

http://www.mccordcg.com/mpp/mpp.htm

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Built. That's All...
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www.monkeybuttpirate.com
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2 Fingers of Scotch with a milk back... Stat!

oh that's not my car, which is why i said "i forget who's car this is" but yea still pretty cool

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http://www.dsmregistry.com/detail.php?carid=1133
*form follows function*

It's been so long but that exhaust looks like the one MeatalJim's was making, but I could be wrong.

Dirk

That's my car...Mccord cutout. Do a search, I wrote a review on it.

Alvin

I'm about to order one of those. I also will be running a stock gs-t exhaust once i find one, then i'll sell my 3inch apexi. Did you get the 3inch MPP semperboost?

SoCal DSM
1996 RS-T: Under Construction
1999 GS AE: New daily driver
"USING NO WAY AS A WAY, HAVING NO LIMITATION AS A LIMITATION"--BRUCE LEE

96rs-t if you sell your apexi n1 and get stock gst. Your egts will climb hella high if you ever decide to boost higher. I don't know I would like to boost more than just 5-8 daily and I like to boost so I wouldnt want an open pipe running all the time.

98' Eclipse GS- Hahn Stage 2- SOLD
02' Honda S2000- SOLD
04' Acura TL- Current Whip

SoCal DSM
1996 RS-T: Under Construction
1999 GS AE: New daily driver
"USING NO WAY AS A WAY, HAVING NO LIMITATION AS A LIMITATION"--BRUCE LEE

New Car:
2004 350z base, Nismo CAI, pioneer avic-n1 (dvd, cd, navi)



Old Car:
1998 GS with hrc stage 2, HID 6000k conversion kit, AEM UEGO wideband, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!

SoCal DSM
1996 RS-T: Under Construction
1999 GS AE: New daily driver
"USING NO WAY AS A WAY, HAVING NO LIMITATION AS A LIMITATION"--BRUCE LEE