Rotary Car Club - View Single Post - TitaniumTT's I hope I make it to DGRR '09 Build

NoDOHC · 10-12-2009, 05:54 PM

Wow! 361 WHp is a good number.

I have nothing but respect for you man and you are doing an excellent job.

I am really hoping that you can get the 400WHp, my hat will certainly be off to you if you do (although it already is).

I don't want you to be disappointed on your next dyno pull, so I will throw out some food for thought.

I doubt that you will ever run this close to peak power AFR on the dyno again, I would expect an 11:1 AFR run to give you more like 320 WHp if a 13.0:1 run gives you 360 WHp.

Unless I read the graph incorrectly, your boost was already falling off at this power level (meaning that your turbo is maxed out, or your charge relief valve is failing). I think that bump in the graph was due to the non-linearity of the waste gate completely closing. If you do have the wastegate completely shut on that run, you are going to need a much better flowing set of turbos to make 400 WHp at 11:1 AFR (unless you are running a ridiculously retarded ignition and can pick a lot of power up there).

Still, 361 WHp is not a bad number at all. (That is actually very impressive).

Out of curiosity, did you ever dyno this car NA to see what it would do?

10-12-2009, 05:54 PM	#524
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Wow! 361 WHp is a good number. I have nothing but respect for you man and you are doing an excellent job. I am really hoping that you can get the 400WHp, my hat will certainly be off to you if you do (although it already is). I don't want you to be disappointed on your next dyno pull, so I will throw out some food for thought. I doubt that you will ever run this close to peak power AFR on the dyno again, I would expect an 11:1 AFR run to give you more like 320 WHp if a 13.0:1 run gives you 360 WHp. Unless I read the graph incorrectly, your boost was already falling off at this power level (meaning that your turbo is maxed out, or your charge relief valve is failing). I think that bump in the graph was due to the non-linearity of the waste gate completely closing. If you do have the wastegate completely shut on that run, you are going to need a much better flowing set of turbos to make 400 WHp at 11:1 AFR (unless you are running a ridiculously retarded ignition and can pick a lot of power up there). Still, 361 WHp is not a bad number at all. (That is actually very impressive). Out of curiosity, did you ever dyno this car NA to see what it would do? __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic) Last edited by NoDOHC; 10-12-2009 at 06:01 PM.