will i be able to hit 300whp with an 18g and supporting mods on CA pump 91 octane? i dont want to go 20 g because im running a perrin tmic and want to have full power in summer. i have an 06 wrx please help.

 

it might be possible since u have a 2.5l I hit 320whp on a 2.0l with methanol injection

 

Yeh youll be able to make 300whp with the proper mods and just get your car tuned.

 

methanol a whole different ball game.


Which injectors you using Jason?

 

mike at gst told me i could use stock ones

 

Yes you should be able to. We flew in Clark Turner from AZ out to Dallas last weekend and there were a few 18g 2.5L WRXs there. Our gas is better but I think it will be possible if done right.

 

If you asked mike that, why didn't you ask Mike this question? He should know more than anyone too.

 

did not cross my mind at the time.. i was just concerned with how much to install and what i would need. not till i got home did i think of how much power i would get. im choosing it because i dont want to upgrade to front mount and i want something better than stock. i dont really care about numbers i was just curious

 

In all honesty, I wouldn't bother with an 18G on a 2.5L. I'd either go VF39 or step up to a 20G.

Properly tuned on an 'average' reading dyno 300whp shouldn't be a problem, on GSTs dyno which I think is Gruppe-s' old mustang dyno, I seriously doubt you'll hit it on their dyno.

 

Agree.

You need an FP Green to break 300whp on that dyno.

 

you need an fp green? i disagree...... i have a 20g.... ( i know , not 18g ) and i made 310 on gst's with an injector leak, boost leak, too small of a maf housing , and my crappy stock bcs....... so i believe its possible....

 

My 04 STi hit 307 whp 339 trq with an 18g and stock intercooler.

 

Ah, interesting. Breaking 300 is tough on that dyno.