How Much HP Should There Be?
#1
Pro
Thread Starter
Join Date: Apr 2005
Location: Puerto Rico
Posts: 571
Likes: 0
Received 0 Likes
on
0 Posts
![Angry](https://rennlist.com/forums/images/icons/icon8.gif)
![typing](https://rennlist.com/forums/graemlins/yltype.gif)
Just want to know your guys opinion on how much hp a 2.5L 951 with the following mods should be doing
![typing](https://rennlist.com/forums/graemlins/yltype.gif)
![crying](https://rennlist.com/forums/graemlins/bigcry.gif)
- Vitesse Stage III turbo Kit w. fuel management/MAF etc...
- Lindsey 4" full exhaust
- lindsey Wastegate
- Custom Head Port w/ racing springs and 5 angle valve job
- Matched Ported Stock Intake
- Lindsey fuel rail & Pump
- SFR Stage I header
- SPEC Clutch
- Raceware studs (low and high)
- AFR = 12
- 21 psi boost
![crying](https://rennlist.com/forums/graemlins/bigcry.gif)
#5
Burning Brakes
Join Date: Mar 2003
Location: In D Nile
Posts: 1,198
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I have some other internal and external mods you don't have but it's pretty close to the same stuff. I hit 360 HP at the rear wheels running 18 psi of boost and still have a miss that I can't figure out, so there is still room for improvement. You should easily get my numbers at 21.
#7
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
My car made in the range of 300 rwhp at 15 psi with a Vitesse Stage III, SFR Exhaust, Stock Head. I believe John says to expect 13 rwhp per each psi of boost over that which should put you in the 350-375 rwhp range. Just a guess.
Trending Topics
#8
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
400whp +/-
From someone who owned that turbo.
Here is a chart from me, except I had a crank trigger miss that day which caused us to call it quits on the dyno
(my own stupid fault).
![](http://www.mturck.com/944/dynoproblems.jpg)
That was 20psi(?) if I recall correctly. Less intake/head mods than you, but MAP/Tec3R instead of MAF.
From someone who owned that turbo.
Here is a chart from me, except I had a crank trigger miss that day which caused us to call it quits on the dyno
![soapbox](https://rennlist.com/forums/graemlins/soapbox.gif)
![grr](https://rennlist.com/forums/graemlins/cussing.gif)
![](http://www.mturck.com/944/dynoproblems.jpg)
That was 20psi(?) if I recall correctly. Less intake/head mods than you, but MAP/Tec3R instead of MAF.
#9
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by MPD47
400whp +/- From someone who owned that turbo. That was 20psi(?) or 19, I cant remember.
![thumbsup](https://rennlist.com/forums/graemlins/bigok.gif)
#10
UAE Rennlist Ambassador
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
If i recall, ST pushed out just a tad over 400whp at 25psi (race timing + xyline) on a bone stock engine. With you're uprades (exhaust + head) you should be pushing in that ball park with the same ignition/fuel and 21psi boost or so.
*just thinking out loud*
*just thinking out loud*
#11
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I never scanned it as it was a crap chart. When I have a CLEAN chart, I'll scan one with all the info.
As for mods, it was
Lindsey Rail Kit - 72# Hour injectors
Vitesse Stage III
Tec3R - MAP Sensor - Coil packs
Lindsey 3"
Spec clutch
Lindsey Stage V
Everything else was stock IIRC. So he has a bigger exhaust, worked head/intake over what I had. But I was running different management/spark.
As for mods, it was
Lindsey Rail Kit - 72# Hour injectors
Vitesse Stage III
Tec3R - MAP Sensor - Coil packs
Lindsey 3"
Spec clutch
Lindsey Stage V
Everything else was stock IIRC. So he has a bigger exhaust, worked head/intake over what I had. But I was running different management/spark.
Last edited by MPD47; 01-24-2007 at 01:38 PM.
#13
Banned
Join Date: Feb 2004
Location: In self-imposed exile.
Posts: 14,072
Likes: 0
Received 8 Likes
on
7 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by hosrom_951
If i recall, ST pushed out just a tad over 400whp at 25psi (race timing + xyline) on a bone stock engine. With you're uprades (exhaust + head) you should be pushing in that ball park with the same ignition/fuel and 21psi boost or so.
*just thinking out loud*
*just thinking out loud*
You might get 25 psi with a k26/6 (IIRC Laust Pedersen did this to test out some water injection stuff a while ago) but at that point the turbo is so totally inefficient and is making so much heat it's probably a detriment rather than a benefit.
#15
UAE Rennlist Ambassador
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Jeff, as Mike pointed out, i missed out on something....
A VR Stage 3 Kit on a bone stock engine (stock internal block/head/valves, exhaust system + headers).
For obvious reasons, the injectors were not stock (72lbs at that time i believe).
A VR Stage 3 Kit on a bone stock engine (stock internal block/head/valves, exhaust system + headers).
For obvious reasons, the injectors were not stock (72lbs at that time i believe).