I just bought and EVO 8 year 2003 yesterday... and sold my STi last week and jumped in a EVO...

So far i am really happy with the car but the owner before me got a pro-tune on it and im kind of scared it is getting pushed to hard...

My power mods on the car are;

BR cat-back
intake
Forge rec BOV

im running 22.5 PSI "It spikes at that then drop to like 19-20 PSI at redline"...making 301whp-309tq
is that safe for what i have?


The tuner also made the Redline at 8k!!! idk if that is safe with my set up..
Can someone tell me if it is?

I know in my STi if i did that it would of blown up probably..

 

8k is fine if you ask me...if it has high mileage I'd maybe take the oil pan off and tighten up things with ARP rod bolts. I think alot of Evo tuners up the redline to quite a bit higher than 8k with no problems. The 4G63 is NOT a wimpy little aluminum EJ motor, it can actually rev! Haha. Anyways, welcome to the Evo world, make sure you do a lot of searching and reading on these forums, you will learn a lot. Good luck!

 

with the stock turbo there's no point in running it higher than the 7k redline. The factory cut off was 7800 rpms. The higher the rpms the more chance of something going wrong with the stock parts. FYI, you can hold 22-26psi to redline depending mods and tune. https://www.evolutionm.net/forums/ev...g-dummies.html

 

your fine. Maybe get some ARP headstuds.. Im revving my IX to 8200 rpms with your mods... Evo's make power up high so we can run them high

 

I have done nothing to my engine and am running 24 pounds of boost and have had no problems, the only thing that sounds like your missing is a walbro 255 that will insure safety for higher boost levels than stock, now about your red line it should be alright to hit 8k but just dont do it all the time!!

 

yea with your mods its fine to rev to 8K but best to not do it.. add some more mods and then rev her..

 

its fine but as stated there is not point going that high

 

8k is fine.

Sean

 

8k redline is the norm.

 

thanks so much everyone.. yea my STi was making 370whp with a 30r... i know in the STi world know one dares to go past 7k without a build motor... n i was running 21.5PSI in my STi..

so i was just wondering...

Thanks for all of the help guys

 

Throw some cams and wake it up dude

 

The boost and redline should be fine. The 4G63 is a very well researched and built motor. Old tecnology taken right to the limit. You will enjoy the experience of the bulletproof stock motor.

Why'd you drop the STI?

Welcome to the EVO world, which I will miss (sorry, sold my evo a week or two ago).

Shawn

 

no point? Have you ever been to the 1/4 mile... Theres a big point in not having to hit 5th gear

 

Ive never shifted to fifth gear in the 1/4 and i dont go much higher than 7k...

 

wanted more power n do it in a cheaper way... n EVO's look nicer