Originally Posted by Coheed
A gt3076r is what I am using, and there is a lot less heat generated by a gt30 turbo when compared to a t28 sized turbo. It moves more air, but that doesn't mean anything. An engine will detonate at peak torque. A 300lb ft of torque engine running at 8k will have less chance of detonating than a 400lb ft of torque engine running at 6k. Higher revs, and the chance of detonation goes down. I am not revving that high, but I am also not doing that much torque. I think my max torque even on 24psi was around 350. Horsepower doesn't cause detonation. Neither does boost, or airflow. So you can't really say that I am detonating on 20psi on pump gas based on the boost I am running. Or the turbo. Or the gas.
My old SE ran a disco potato on it at 18psi daily for years. The guy I sold it too ran 87 octane in it with bkr6e plugs. That was a stock bluebird! There is a big dyno meet tonight. I am going to show up and do some pulls on 20psi to see if I can read any detonation on the plugs.
A gt3076r is what I am using, and there is a lot less heat generated by a gt30 turbo when compared to a t28 sized turbo. It moves more air, but that doesn't mean anything. An engine will detonate at peak torque. A 300lb ft of torque engine running at 8k will have less chance of detonating than a 400lb ft of torque engine running at 6k. Higher revs, and the chance of detonation goes down. I am not revving that high, but I am also not doing that much torque. I think my max torque even on 24psi was around 350. Horsepower doesn't cause detonation. Neither does boost, or airflow. So you can't really say that I am detonating on 20psi on pump gas based on the boost I am running. Or the turbo. Or the gas.
My old SE ran a disco potato on it at 18psi daily for years. The guy I sold it too ran 87 octane in it with bkr6e plugs. That was a stock bluebird! There is a big dyno meet tonight. I am going to show up and do some pulls on 20psi to see if I can read any detonation on the plugs.
k................I never actually said boost, HP, blah blah makes your engine detonate. Why even bring up EVO's in the first place when they are built for 23lbs, the way their head are designed, piston design, ect...So lets get away from cars that don't matter. What we actually dealing with is what is going on with your tuning system and how you can manipulate it. Which you can't touch your timing on a JWT.
Side note......Dyno Altitude corrections are for naturally aspirated engines, NOT turbocharged cars.
So since you are actually making around 375whp...a 13.3 @114 makes sense..
Your 442 is using a 18% correction factor.....Why? So You are actually pushing 375 @24lbs on a VE with a GT30.....and nothing is wrong.......sounds good. I'll be done its not my car. Not my tune, Im trying to get you to think a little and check your stuff before you fall off the edge into a failed engine.