TitaniumTT's I hope I make it to DGRR '09 Build

[TitaniumTT]

Originally Posted by NoDOHC

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 think we'll land right around 400. Thanks for the props, ya gotta give some to Dave to though. Guy found 50hp right off the bat without increasing boost. Guy is awesome.

Originally Posted by NoDOHC

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.

We generally run her @11.7-12 afr or about .8-.815. 11.1 would start to drop the power off but I don't think we'll loose 9-10% power by dropping 1 full AFR.... I could be wrong though.... we'll see. Also, that last run Dave let out @ 6700 RPM's. Previously she kept climbing in power all the way to 72-7300 RPM's.

Originally Posted by NoDOHC

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).

Boost was falling off and we even dropped the duty cycle more as the RPM's increased to try to keep the boost from falling off but it only worked so well. The root cause of the problem was the charge relief valve was left open..... yes left open. When I was breaking this engine in I went into the Motec and programed that solenoid to keep that valve open at all times to help stay out of boost for breakin. I just forgot to swap it back I put it back the way it was supposed to be and she held boost all the way to redline at half the duty cycle on the WG. I'm hoping that she'll get to 15 psi without silly backpressure. INJ 7 is the CRV.... this is a 3rd gear pull in the neighborhood....... I don't know why my neighbors hate me

Originally Posted by NoDOHC

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).

Well, we know the turbo's can move 18 psi on a bridgeported 13B-REW so my med streetported RE should be able to swallow 15ish. The Charge Relief Valve is a 3/4" hose attached to a stock blow-off valve so it can vent some air to say the least. Like I said, CRV closed she held more boost at about 1/2 the duty cycle on the WG. Can't tell for sure, but best guess is she'll make 15 psi. Tonight she spiked to 15 psi in 3rd at 60% duty (less duty = more boost) We'll know on the 22nd.... next trip to Dave.

Originally Posted by NoDOHC

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?

Thank you and no, best I can give you is she made 131 wheel with the turbo's all fucked up and backspinning the 2ndary @ 0"hg. We really wanna see 400. I'm not saying 400 or bust but we should be able to see it or close to it. The timing isn't retardedly retarded but some CAN be gained with the timing...... we would rather NOT fuck with the timing or the AFR and we probably won't stray away from the conservative approach that Dave and I both like. We'd rather give up some ponies for some longevity and saftey. Meh, we'll see in about 10 days or so. I'm getting anxious though..... this has been going on for 6 months now. We're gonna get the girl all dialed in and I'm gonna break her down to a bareshell