Gotcha. I'm getting ready to order the stuff from tactrix so I can use ECUflash and EVOscan. Debating on whether or not to tune the EVO myself like I've done with all my other cars.

 

The stock Evo X internals can hold over 450 HP and 400 TQ all day with no issues if properly tuned. Your complaining... that the internals from the factory....??? which already BONE stock make and maintain more HP PER LITER than any other car currently made.... You show me another PRODUCTION made car... even the Bugatti that has more I'll buy you lunch sir..

Please don't post a story about a buddy who, when drunk one day, claimed his new mustang made 1000 HP with a K@N and a Borla Exhaust...

It gets old when people expect the car to make 1000 HP from the showroom floor. If "almost" anyone blows their motor with a stage 2 and tune... its 99% of the time.. the tuners fault.

 

+1 ^agreed. The factory internals are very much capable of holding such power. Mitsu did a great job in reenforcing the block and creating coolant passages to keep overall temperatures down. The main flaw in the motor design is the rods and the rod bolts, however, 375-400wtq isn't a problem as long as the tune is solid. The 4B11 is a great design and deserves merit for its capabilities.

 

So I take it 350 tq is okay if I expect this car to last at least 200 k miles? Assuming I do all the schedule Maintance?

 

you'll be fine. a lot of guys here run 380 tq without problems. just make sure you got the clutch and master cylinder to match.

 

I've also seen a few dyno's reving beyond the factory 7000rpm redline. On a stock turbo there's not really a reason to do that since the power is tapering off anyway.

I remember reading in Kenne Bell's tech articles somewhere that every 1000 rpm is another 12% load on the rods. So reving out is exponentially more load, 12% + 12% etc. Keeping the revs to 7000 rpm max would buy you a little more margin of safety. Why rev out higher than stock unless there's a good reason to, aka larger turbo, cams, or built bottom end.

 

you are reading to much into it, the stock 4b11t can rev past 7k no problems, I red line my car all the time. these engines can handle some serious abuse

 

be prepared for a very long tuning process with baka as hes very busy and his communication skills are very lacking. i recomend chet, hollywoodx, golden or razorlab for faster time frames.

 

Is 9 k max rev something that is pretty easily obtainable with these cars?

 

I'm not saying they can't rev out past 7k, just questioning the gains on the stock turbo and cams since the turbo is running out of breath. Upgrade the turbo and/or cams then there's a reason to rev out since the power is still climbing.

On my last couple of cars I stayed conservative with the RPM's and timing and that lead to many miles of abuse with almost double the stock whp on a stock motor without any problems. But everyone is different and treats their cars differently.

 

If built. But 9K is really at the very limit for the transmission. You'll need a dog box.

 

What about to hit 8k max rev with 375 lb tq to redline

 

There is no flaw in their design. Every engine is going to have a weak point, but they're still capable of holding double the factory output. Very few engines can make that claim. Hell, some Subaru engines can't even hold their factory output.

This is kind of like how on the 8/9's the weak link in the drivetrain was the transfer case. Well, now with the X Mitsu has beefed up the transfer case and the rear differential is now the weak-link. No matter how strong you make everything there will always be something that's the weakest point.

We ask a lot of our engines, turbos, and drivetrains with how much power we push from them. Keep that in mind before claiming something is weak, and consider yourself lucky for having a car as beefy as the Evo.

 

+1, both those guys know more about X tuning than anyone I have personally dealt with and they didn't learn tuning on the X either, they just invested a **** load of time learning it before everyone else.

He is still in the process of opening up a brand new shop after he got screwed (won't get into it). He is normally very very good with communication, I literally got responses weekends, nights, daytime whenever and went through probably 50-60 tuning revisions with him last summer. Typically I was the hold up, he would text me bugging to get him logs lol.

Depending on ones setup the other guys on your list are good too, but for the serious setup (built motor) I'd feel better about Baka or Razorlab and prolly hollywood too. Built motors just need extra love, time and experience to get them purring from my experiences.

This! The X does everything it should and was designed to. We are pushing it past its designed intentions, they aren't weak or problematic.

You gotta pay to play people

 

Interesting. Do you have any more information on this?