i dont know how you 500+ whp can handle, but mine drift through third gear. i just switch to bigger and wider tires(rpf1 255/17), still drift a little.

 

26x10" drag radials

 

275 40 17 kumho and 26x10 slicks

 

no on same boost level the car would make more on e85, IF however the duty cycle of the fuel system dont max out meaning you would actually have to lower boost, thus making the car make less or the same power. e85 roughly burns up (I believe dont qoute me) 30% more fuel. it consumes more to do the same job. so maybe at 13 psi you are at 85% duty cycle on pump gas, where as on e85 you may be at 100% duty cycle at 11 psi. not saying you are but but just assumeing. so on 13 pump u made 435 and on 11 you may make 435 on e85. if you could go 13 psi on e85 and the fuel system wasnt peaked then yes you would make more power. if I confused you then sorry

 

that's what i'm thinking too. can anyone prove to make more power on e85 with the same psi as pump gas? thanks

 

well I can prove to make more on c85 as to pump. c85 is VP version. equivelent to e85 just always gaurenteed that same octane.
at 13 psi on 93 car made 447, on 13 psi on c85 car made 521. end results were 589 on 93 at 19 psi 20 degrees of timeing, then on c85 818 at 28 psi only 11 degrees of timeing. and yes although i blew the engines in between the Compression ratios remaind the same from the two builds

 

if your car is fine now, and you're not going to be changing the boost levels to make more power than just changing the timing a bit i don't really see it being very cost effective to switch.

you should still be fine with your injectors and fuel pump. your base fuel pressure will change from 43 to 90+

 

I would just get a 3" pulley (assuming that you have a 1200 blower), ID2000s, and then a good tune. You won't be disappointed.

 

Let us know if you need some 2000s bud

E85 is the way to go !

 

Don't forget all the other benefits of e85 e.g the cooling benefits especially for a forced induction setup