Had my car tuned by Steve Kan this weekend (did an amazing job again). I did a streetport with my motor and water/meth. 50/50

It dyno at 540.2 at 13psi on a dynapack dyno (reads 10% lower). We had ignition break up starting at 5000rpm so couldn't go any more.

I will post the dyno sheet later

 

Did you by chance take any pictures of your ports? I'm just curious how big you decided to go to reach that power at that boost.

What made you only go to 13psi?
Which water/meth kit are you using? How much are you injecting (% of fuel that is water/meth)?
EGTs?
AFRs?

Definitely interested to see the dyno. . .

Congratulations, sounds like a really fun car.
ryan

 

The porting I did at me shop. its a mild streetport, the exhaust was open right up. Sorry dont have any pics.

We wanted to go to 15psi but the ignition break up was to bad.
Using the snow performance kit using two nozzles 625 and 225 running 50/50 water/meth

I The think the afr was around 11.5

i will try and post the sheet tonight

 

What are you using for ignition?

I have a VERY similar setup . . .in my sig

Did you try and do some tuning without the AI to see if your ignition breakup was a function of it?
thanks
ryan

 

Just using the LS1/LS6 stock corvette coils. no we didnt try without AI.
I will be changing to MSD coils and box

 

What rpm did it make those numbers at? What was peak torque?

 

dyno sheet

 

Why don't those two curves cross at 5252 RPM? Am I have a severe brain fart?

 

They don't cross cause the HP versus toque scales are not the same.


-Ted

 

That's what I was missing... I'll keep quiet now

 

nice

 

Are you having any boost control issues with your setup? What wastegate are you running? Any pictures of your manifold?

Awesome numbers, get that ignition straightened out and give it another go.
ryan

 

No Boost issues. I am running a Innovative Indy Gate


I will post pics of my manifold later tonight

 

Maybe I'm just an incompetent searcher, but I can't seem to find the specs on that wastegate.
What size is it?
How much AI are you injecting?

Thanks for all the info, definitely insightful.

 

http://www.innovativeturbo.com/pages...asp?sku=130003

I gave you the two nozzles sizes at 150psi starting at 10psi of boost

 

Thanks, sorry about that, I see the sizes now, I don't know what I was thinking they were when I skimmed over them. . .

Thanks again.
ryan

 

i was not aware that dynapacks read 10% lower!!!! i do believe it though, i watched an RX-4 make 176 wheel on a dynapack then 206 wheel on a dynojet with no real changes. if its truly a ten percent loss though, then im at 396 wheel! nice!

anyways, good numbers! ignition break up is a real bitch, but the LS1 coils are nice and should take care of it. good luck, hopefully you hit 600 wheel!