Pontiac Solstice Forum - View Single Post - 2.4 Turbo - blown engine [rumor, non-substantiated]

I was also offered the "91" octane tune which reduces timing slightly to compensate for the crappy gas. I find that if I run 91, I can only run about 7psi without knock. My car has a custom stage 4 tune that was setup at Hahn Racecraft and I will stick with it and just mix gas if I need more power. But it's as simple as this, if you have engine knock, turn down the boost and you shouldn't have problems.

Clear

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View my car domain page http://www.cardomain.com/ride/3062072
Proud owner of Hahn Racecrafts "Soul Food" Solstice and member of TEAM SOLSTICE 2008

Mods

Dynoed at 450HP
Hahn Turbo Stage IV with valvetrain upgrades
Clutch Masters Stage IV Clutch
Hahn High Flow CAT
Solo Performance Center Dual Exhaust with Norms Fiberglass Diffuser
Eibach Sportline Springs
SSBC Big Brake Kit
Konig Privat 19" Wheels
Custom Two Tone Paint
Razzi Wing

	ClearBraInstall Senior Member Join Date: Mar 2006 Location: Las Vegas	I was also offered the "91" octane tune which reduces timing slightly to compensate for the crappy gas. I find that if I run 91, I can only run about 7psi without knock. My car has a custom stage 4 tune that was setup at Hahn Racecraft and I will stick with it and just mix gas if I need more power. But it's as simple as this, if you have engine knock, turn down the boost and you shouldn't have problems. Clear __________________ View my car domain page http://www.cardomain.com/ride/3062072 Proud owner of Hahn Racecrafts "Soul Food" Solstice and member of TEAM SOLSTICE 2008 Mods Dynoed at 450HP Hahn Turbo Stage IV with valvetrain upgrades Clutch Masters Stage IV Clutch Hahn High Flow CAT Solo Performance Center Dual Exhaust with Norms Fiberglass Diffuser Eibach Sportline Springs SSBC Big Brake Kit Konig Privat 19" Wheels Custom Two Tone Paint Razzi Wing