It's to hard for me to guesstimate what the failure was. I'm going to call the tuner tomorrow and see if he can give me some ideas. I was running 93 octane gas. I don't fool with the EMS, although I thought about logging, etc. But I just got it tuned and figured there was enough safeguards. I don't know, I'm not mad at anyone, especially my tuner who is a very nice guy and this problem may be totally unrelated to the tune.

My boost gauge isn't very accurate, I forget exactly what the MAP sensor readings were, but it was a bit more than 20psi if I remember correctly.

And I have a hard time understanding why the intercooler doesen't come into play. If you do 5-8 pulls on a dyno in one gear, with some cooldown time and tuning in between, the intercooler is doing it's job and the upper intercooler pipe is probably cooler. And the turbo isn't glowing red on the dyno either. So if the car is tuned on a non-load bearing dyno for 1 3rd gear pull and instead it's run for 45 minutes at 10/10ths that should cause detonation. Correct me if I'm wrong?

 

And I'll be posting pictures of the plugs, head and block tomorrow to get some opinions.

 

checkout the pruven front mount .it's one of the largest.also direct fit .

 

^ if by direct fit you mean having to buy a slimline radiator fan to get it to work then yeah, i guess.......

 

Stay on topic guys

And also, I'm not inferring that the intercooler led to the problem. It's very obvious that the stock intercooler can work in long track days, the tuning just has to be adjusted accordingly. I'm just infering that ***Maybe*** it wasn't tuned safe enough for the stock intercooler. Getting a larger one would simply provide me more of a safeguard against pumping hot compressed air into my engine.

And perhaps maybe the tuning end is partially my fault, I didn't install the LED's as I had planned and perhaps I should have had them run the car through all the gears at WOT several times in sucession and then tune the car. I don't know, I'm not an expert at tuning, I've read EFI basics and some other literature but that doesn't mean jack. Maybe I should find a load bearing dyno next time? I really don't know, that's why I posted this to get some feedback from people doing similar things and those who are tuning the cars.

Until I pull the head and get all the details I confirm anything. But the plugs have evident signs of detonation.

And maybe Shiv is out there to give some informatin on how he tuned his car for one lap?

 

I'm really sorry to hear that. But I have to say that you have the most possitive attitude about racing! I really don't think its the intercooler that cause the damage. me and my friend just finished a two days event a Summit Point 2 weeks ago, we are both making 300+ hp with stock intercooler. My friend have his sprayer on auto but mine were off the whole time and everythings seems fine. The only thing is our caliper turn brown but thats about it. Do you have an oil pressure gauge? Is the old pump working? Are you running stock injectors? I would upgrade the fuel system and/or oil cooler before I look into the intercooler if I were you. Good luck on the rebuild.

 

It is because of these reasons my car was tuned to a safe air/fuel. Because when your roadracing and building up alot of heat the engine can tend to lean itself out. Most times roadrace setups are tuned around 11.0 afr. Anything higher is just playing with fire unless your on race gas.

 

Definitely wait til you pull the head to jump to any conclusions. It will be interesting to see how much real damage (if any) there is. You might be lucky like Mitsuorder and have it blow out between two of the three head gasket layers (my belief). It also sounds like your fuel pump gave up the ghost... probably causing everything.

Of course we can all only speculate at this point.

Again, best of luck!

 

I've had my turbo glowing like an orange ball of fire on the dyno before. My car has 57 passes in two different visits at one shop. With a reflash or a piggyback, if you get a bit of knock, the factory ECU will pull timing pretty aggressively. That's one awesome thing about the stock ECU. Of course, its not as nearly as flexible or adaptable as an EMS.

To me, that margin of safety is important, because if my motor kicked the bucket, I'd be forced to park my car for awhile until I could afford to fix it.

Really though, I think race gas on a 93 EMS map on a trackday is all the safety net you could ever need. If its not available, then the next best thing you can do for insurance is drop your boost a bit. An Evo would still be extremely fun on track at 17-18psi on the stock turbo.

 

Yes, it's so hard to get any idea of what caused the failure. I definetly don't want to infer it was due to my tuner and I definetly don't want this to be one of those, "Did you hear X's tune blew his motor up." It's hard for me to tell until I get on the phone tomorrow

 

no cutting,works with factory piping is what i meant.and it is double the size of the stocker

 

I agree. With stand-alones, you have to be very careful when it comes to running your car in conditions that you have not tested in. So this means running race gas when conditions get bad and carefully watching knock counts and coolant/oil temps. Stand-alones don't have the natural adaptability and failsafe algorithms exhibited by factory computers. They can be tuned for a variety of conditions (air temp compensations, altitude compensations, coolant temp comp, etc,.) but the results are only as good as the tuner. So spend your $$ there, not on extra parts. Good luck with your project

Just my 2c,
Shiv

 

Meta,
Very sorry to hear about your motor. You are a very positive force on these boards, as evidenced by your attempts to set up the Evom Tuner Challenge.

I hope a couple of vendors would consider helping you out with a little discount here, a little free tuning there, etc. in order to getting you rolling again sooner. Good luck!

 

Sorry to hear about your motor.

My guess would be running to lean. I bet the piston rings gave out and broke the headgasket in tbetween 2 and 3. As for the sparkplug, a rod or bearing broke and the piston smacked the plug.
Silver flaky spackles on the plugs are signs of detonation.
How much gas did you have while racing? Ive heard that gas in the tank gets plastered on the wall of the fuel tank while taking hard turns . accelerating during this event will also cause fuel starvation. thats probabaly what caused your car to lean out and detonate.

Just look on the bright side, You'll have a more powerfull Evo when you get back on the track.

good luck and happy re-build

 

if the EMS caused this because of inproper tuning could this been prevented with the UTEC or xede. Or both of those depends on the tuner also.