i have an 03 evo with the 9.8 hotside. I have utec and intercooling piping, intercooler,tbe. I got it tuned for 22 psi and put down 300/300. i have a header,o2 housing, 272 cams and tme turbo with the 10.5, intake. I'm going to get it tuned for 25 psi. Just wanting to know what you guys think that i will put down.

 

For all of your mods, 300/300 seems a little low to me. I know the VIII will put down different numbers, but I would still hope for a little better showing. I therefore do not have any idea what you may expect with 25 psi. Good luck.

 

Did you put down 300/300 with just the 9.8 hotside, utec, IC with piping, and tune...or with the mods listed after that?

 

you must be running race gas otherwise your kinda pushing the PSI just a tad bit

 

25psi on pump gas? No way.

Please don't ask us to estimate your power numbers. You would need to list about 10 other factors that you haven't already listed, and even then, it would be a wild guess. Add your mods, then hit the track - that's how you know if you're making power. Bench dyno'ing is just as bad as bench racing.

 

 

You need to add a Walbro FP and on 93 Octane with boost in the 21-22 psi range I'll venture to say 360whp.
Uhh, hold on. Are you running the stock TBE? If so, I'd say 320-330whp.

 

you forgot two basic things before raising the boost to 25 PSI ..
a walbro Fuel pump and ARP headstuds
and 25 PSI is too much on pump or goodbye motor ! ..

from all your mods, im guessing you'll have a good 360 whp - 370 whp

 

i also have a walbro and 650 injectors. When i dynoed 300/300 that was with the 9.8 hotside the walbro and the 650s,turbo xs tbe, utec,piping,intercooler. The other list is what i'm about to put on my car. I do have the arp head studs. I've read some threads on here and they said dont go over 21 psi with out them. When i dynoed my car the tuner said that he could of push it some more. But didnt want to because of the weather and the crappy gas during the winter. I know you guys cant tell what i'm going to put down. I thought someone had the setup or knew someone with it. Just to give me an idea cause i hoping for 350-400 to the wheels. Also when i dynoed 300/300 that was at 22psi. After i put everything on i want to retune it for 25 psi.

 

i think your sill pushing it @ 25psi on just pump

 

25 psi is risky on pump.

 

i wouldnt run under 100oct on 25psi
-Chris