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Top 2GNT Technical Turbo/Nitrous Tech topic #62329
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Subject: "How to flatten power curve?...fun runs out when max boost reached" Previous topic | Next topic
SemperboostDec-17-03 03:10 PM
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#62329, "How to flatten power curve?...fun runs out when max boost reached"


          

I love the feeling of the car going into boost and reaching it, but when it reaches the max boost the power just drops off. Is there a way to make the power curve less peaky and more broad. I have Joe P MBC (7 psi) so I know that the boost is sticking to the preset level. It's like at 3k-5k is where the power is at but that power band is just too small..I could get a .48 a/r and get a faster spool but it'll hinder at high rpms which I also want. Any thoughts..thanks
Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch

  
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Replies to this topic
RE: How to flatten power curve?...fun runs out when max boost reached, Global Ruler Of All ThingsDarkOne, Dec-17-03 04:39 PM, #1
RE: How to flatten power curve?...fun runs out when max boost reached, Justin99RS, Dec-17-03 06:33 PM, #2
      RE: How to flatten power curve?...fun runs out when max boost reached, TeamJasonESi_T, Dec-18-03 02:42 AM, #3
      RE: How to flatten power curve?...fun runs out when max boost reached, thedawg, Dec-18-03 09:16 AM, #4
      RE: How to flatten power curve?...fun runs out when max boost reached, 95redesi, Dec-18-03 09:45 AM, #5
      RE: How to flatten power curve?...fun runs out when max boost reached, thegame, Dec-18-03 09:49 AM, #6
           RE: How to flatten power curve?...fun runs out when max boost reached, Semperboost, Dec-18-03 11:23 AM, #7
      RE: How to flatten power curve?...fun runs out when max boost reached, Matt_95tgs, Dec-19-03 10:54 AM, #8

Global Ruler Of All ThingsDarkOneDec-17-03 04:39 PM
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#62333, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 0



          

Invest in some cams.

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

  
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Justin99RSDec-17-03 06:33 PM
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#62338, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 1

          

i have the same issue...even with a stage 2 kit, crane #12 cams and a bunch of other high rpms mods...and at 8psi it still feels like it goes flat once the wastgate is fully open...i know the car is still going fast...but just don't "feel" it once i hit full boost...

'99 RS
gone, never forgotten

'03 BMW 330i 5speed

'00 Jeep Grand Cherokee Limited 4.7

  
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TeamJasonESi_TDec-18-03 02:42 AM
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#62342, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 2

          

You could also rebuild your engine and boost 15 psi instead. emoji

_____________________________________
Jason ESi-T

04' BMW 325Ci
91' Nissan 240SX
98' Eagle Talon ESi (sold)

  
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thedawgDec-18-03 09:16 AM
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#62359, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 3

          

Get a 2.5" downpipe and 2.5-3" catback. A larger TB opens things up nicely too.

  
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95redesiDec-18-03 09:45 AM
Member since Nov 25th 2003
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#62360, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 3

          

Originally posted by JasonESi_T
You could also rebuild your engine and boost 15 psi instead. emoji



That will do the trick..... ^^^^^

  
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thegameDec-18-03 09:49 AM
Member since Oct 08th 2002
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#62361, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 3

          

Originally posted by JasonESi_T
You could also rebuild your engine and boost 15 psi instead. emoji


someday........ someday...........



14.5 @ 95mph / 7psi 185hp/180tq emoji

  
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SemperboostDec-18-03 11:23 AM
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#62367, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 6

          

I have a 2.5" catback and the Star DP so my exhaust should be sufficient.. I got the 60mm T/B on the way. I need to take it to a dyno to see where the power is at and where it falls off.
Alvin

96 RST

Star Stage I turbo kit /Starion I/C w/ 2" chrome piping / GReddy Type-S BOV / Missing Link / Custom APEXi- GReddy 2.5" exhaust / 55mm ARD TB/ Nology wires / APEXi EL mech boost gauge / Autometer A/F gauge / Southland Dual Friction clutch

  
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Matt_95tgsDec-19-03 10:54 AM
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#62423, "RE: How to flatten power curve?...fun runs out when max boost reached"
In response to Reply # 2

          

You need to index your cams. They won't help you much if they aren't degree'd in properly.

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...

  
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