Upgrading my 951, in search of 300RWHP.
03-29-2008, 07:06 PM
#1
1st Gear
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Upgrading my 951, in search of 300RWHP.
Ok, I've already got the engine out and taken apart. I'm going to rebuild it, and replace the turbo.
I currently only have the following modifications: 1) No cat. 2) Autothority(sp?) chip. 3) Dual Port Wastegate. 4) Manual Boost Controller.
I plan on running the car @ 14.5PSI, what the performance chip calls for.
What I'm after is, 300RWHP. I see on SFR's website the stage I turbo can do 325 @ 16-18psi.
My main question is, if I'm going to run this turbo @ 1bar, do I definately need larger injectors or just an Adjustable Fuel Pressure Regulator, or both?
If I do need the AFPR, or both - would using a good A/F ratio gauge in my gauge pod be sufficient to ensure I'm not running lean? Or is there another way I personally can make sure I'm running somewhere close to 12:1 A/F? (I think it's 12:1 i'm after)
I currently only have the following modifications: 1) No cat. 2) Autothority(sp?) chip. 3) Dual Port Wastegate. 4) Manual Boost Controller.
I plan on running the car @ 14.5PSI, what the performance chip calls for.
What I'm after is, 300RWHP. I see on SFR's website the stage I turbo can do 325 @ 16-18psi.
My main question is, if I'm going to run this turbo @ 1bar, do I definately need larger injectors or just an Adjustable Fuel Pressure Regulator, or both?
If I do need the AFPR, or both - would using a good A/F ratio gauge in my gauge pod be sufficient to ensure I'm not running lean? Or is there another way I personally can make sure I'm running somewhere close to 12:1 A/F? (I think it's 12:1 i'm after)
Last edited by Cryptoxx; 03-29-2008 at 07:09 PM. Reason: Forgot something.
03-29-2008, 11:37 PM
#2
Race Director
I'd look into the lindsey racing 300rwhp kit.
If you upgrade the turbo upgrade the injectors..I have a 60-1 hifi and stock injectors (hopefully not for longer) and max them out over 14psi..
If you upgrade the turbo upgrade the injectors..I have a 60-1 hifi and stock injectors (hopefully not for longer) and max them out over 14psi..
03-31-2008, 04:12 PM
#3
You'll need both the larger injectors and the FPR. In order for the larger injectors to flow more fuel, they need greater fuel pressure. An A/F ratio guage is always a plus, but not 100% needed. If you buy from a reputable vendor, then you don't have to worry so much about running lean.
04-19-2008, 08:08 PM
#4
Burning Brakes
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We did a 951 with stock injectors with guru stuff . I don't recall which turbo but I know it wasn't stock . We had to run it at 18 psi stock cam . It put 299 hp to the ground with Great o2 #s .Aaron and I worked on the car together on the dyno . I was inside working with the Version coding and the calif. switch that delays the ign. He was outside playing with the AFM and putting resistors in the NTC2 . We finally realized the only way to get the o2 #s good was to put in the 3 Bar regulator . That fixed alot .
We also just built a NASA motor that put down around 310 with a stock turbo and injectors with an aftermarket cam and no head work on either .
We also just built a NASA motor that put down around 310 with a stock turbo and injectors with an aftermarket cam and no head work on either .
