Maybe because some people don't want their cars to make 600whp all the time. Personally I like utilizing the car for some backroad action, and without a ****load of money in the suspension and tire setup 600hp is f**king useless. Not to mention its just that much more stress on the engine.

 

Having a 35R for some "backroad action" is like hunting a squirrel with a nuclear weapon. It's a bit overkill.

 

In that case, why not stick with a stock turbo, or a green and make 350-400? If you have a 35R, than you should have the supporting mods to run it, otherwise what is the point? Now, having a street tune and a track tune are two different things. But still, 22 PSI on a 35R is like running 12 PSI on a stock turbo in a sense...

 

That's pretty cool to see the difference on a dyno sheet of how much of a difference it makes. Very cool!

 

Yes but I'm saying you should be tuned for 28-32 psi even if you don't run it everyday.

I'm just an amateur but from what I've learned over the years, thanks in part to the good people on EvoM like TedB and such, it seems like it is provable, that whatever you deem safe boost on stock turbo, can be higher with a larger turbo, while keeping the exact same safety margin, and all else being equal. It's not a guess it's fact... *I think*.

I would have so loved to see the OP of this thread, do a test, while listening or logging knock, to keep increasing boost, while retarding ignition timing, on pump fuel. My guess is he could get to around 35 psi on pump fuel safely, and probably around 30 psi he would end up not making much more power.

 

35 PSI on pump with no meth/alcohol injection? Not sure about that one...

 

I did run it on pump 93 octane fuel at the same 28 psi here are is comparison of the race fuel vs pump gas dyno run.

[IMG][/IMG]

 

I've ran 33psi on pump gas and I could have ran more too based on the knock voltage in the AEM.

 

What knock voltage do you get?

 

220, 221...whatever it takes.

 

???? what does that represent.

AEM knock voltage is 0-5 volt range

 

Thats why you have a gas pedal and not an on/off switch. If you want less than 600hp use less throttle.

 

I've been wondering this same stuff since im in the middle of tunning my car. I started a thread timing vs boost but know one chimed in. I was under the impression that boost made more power than timing as long as the timing is somewhat decent and not over agressive with higher boost?

 

I've been asking my self the same question

 

I guess you guys aren't early 80's movie buff.