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E85

01GrandPrixTURBOGT

01GrandPrixTURBOGT

New member
Im in the process of top swapping my grand prix and i want to be able to mod without the worry of knock. Ive thought about running meth and intercooler combo to run a smaller pulley but many have said id only probable be able to run a 3.4 pulley. So im wondering if i use e85 and other basic mods ex.headers 180*,colder plugs and wires could i run a 3.0 or maybe even smaller? Ive seen e85 flex fuel conversion kits where i guess you can switch between gas types. If i got this could i run the smaller pulley and not change anything else except injectors? Or could i get a tune and 60s injectors and be ok? thanks for any info.
 


You will only know what pulley size to run, by driving and scanning your vehicle via engine management system.
You don't jump the gun and crank up the S/C output, you make small adjustments as you go.
You must be especially careful with your high compression block.
60#ers are a decent S/C sized injector for E85, I run 80's with my 04+ returnless style.
Those "FlexFuel conversion kits" are not necessary or useful at all for W-Bodies, when we have Digital Horse Power (DHP) or HPTuner available.
All that is necessary will be injectors, and alter your programmed injector flow rates.
Don't forget to change your fuel filter after the first tank of E85!
Then change your fuel filter again after the 5th or so tank.
 
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