EVO DYNAMICS STRIKES AGAIN - pure_evo, (411whp/394wtq; 30PSI; E85)
Thread Starter
Joined: Nov 2005
Posts: 2,438
Likes: 6
From: Central Texas
Tuners will generally make the tune as agressive as you want them. As for mine he told me when I had knock and we backed it off until there wasn't any and he felt safe. There is a pretty big issue here and it's that if you are in 5th gear at WOT the car does not and can not control boost as if it was 2nd, 3rd, 4th gear. My car is tuned for spike of 32 PSI and in 5th gear at higher RPM's at WOT I've recorded a spike to 37 PSI but thanks to the knock sensor nothing was hurt. Depending on how your tune was set up and the temperature it's pretty obvious things got pushed past their limits. In colder weather the air is denser and you are going to push more boost. I wouldn't be surprised if you hit 35-36 PSI and without the knock sensor to control it this is what can happen. Every car is different, every tuner is different but I would stand behind Kevin 100%. If he does the rebuild he can let you know what happened. It sucks, no doubt, hopefully you're back up and running sooner than later 
Yes, I call my car the Mamba but there are plenty of TB EVOs out there that are more deserving and more well-built.
Yes, I'll keep everyone abreat of the situation in the days ahead. I'll try to upload a few ECU Flash images of my timing maps later this evening.
I understand about the knock sensor. When I saw the SES light come on, I took the car to Autozone for a diagnostic check. It read "O2 sensor bank one". I called Kevin and he told me that he was sure that it was just the rear O2 sensor since I have a test pipe and that it was nothing that I should be worried about.
Also, you may wanna talk to you tuner first about posting images of the timing maps. Its actually against EvoM rules to post vendor maps.
here is the log from the tune on the car:
you can see nothing out of the ordinary. max torque timing was around 5 degrees, peak timing was near 20 degrees. that is a typical E85 tune (some are more aggressive yet). you can see two 1 count of knock but that is nothing to worry about (not rod throwing knock), and the timing is not beyond MBT as noted by the repeated runs we did with improving torque figures every time.
the AFR and boost curves are on denvers laptop, but the boost was not above 30psi, and AFRs were in the low 12's on a gas calibrated wideband. (12-12.3AFR).
you can see nothing out of the ordinary. max torque timing was around 5 degrees, peak timing was near 20 degrees. that is a typical E85 tune (some are more aggressive yet). you can see two 1 count of knock but that is nothing to worry about (not rod throwing knock), and the timing is not beyond MBT as noted by the repeated runs we did with improving torque figures every time.
the AFR and boost curves are on denvers laptop, but the boost was not above 30psi, and AFRs were in the low 12's on a gas calibrated wideband. (12-12.3AFR).
here is the log from the tune on the car:
you can see nothing out of the ordinary. max torque timing was around 5 degrees, peak timing was near 20 degrees. that is a typical E85 tune (some are more aggressive yet). you can see two 1 count of knock but that is nothing to worry about (not rod throwing knock), and the timing is not beyond MBT as noted by the repeated runs we did with improving torque figures every time.
the AFR and boost curves are on denvers laptop, but the boost was not above 30psi, and AFRs were in the low 12's on a gas calibrated wideband. (12-12.3AFR).
you can see nothing out of the ordinary. max torque timing was around 5 degrees, peak timing was near 20 degrees. that is a typical E85 tune (some are more aggressive yet). you can see two 1 count of knock but that is nothing to worry about (not rod throwing knock), and the timing is not beyond MBT as noted by the repeated runs we did with improving torque figures every time.
the AFR and boost curves are on denvers laptop, but the boost was not above 30psi, and AFRs were in the low 12's on a gas calibrated wideband. (12-12.3AFR).
Im pretty sure now that the reason for the failure was just that was the TQ limit for that stock block.
Would you agree Kevin?
Last edited by Evo_Jay; Dec 28, 2009 at 03:31 PM. Reason: grammer
some engines fail. simple as that. it really sucks when it happens, i know first hand how it feels (and on my old porsche of all the cheapest cars to replace motors in 
). i've seen ring lands fail on pump gas, stock turbo, low boost tunes, and i've seen stock motors make into the 530+whp range on stock everything. we should take everything apart to see what if anything is discernible from the damage (rod bolt let go, boost line of wastegate pop off, fuel pressure regulator vacuum line pipe off, wastegate stuck shut, could be any number of reasons, including knock, bad E85, boost spike, etc...) knock is usually pretty easy to see on the piston tops if that was the case. it could just be a weak rod.
). i've seen ring lands fail on pump gas, stock turbo, low boost tunes, and i've seen stock motors make into the 530+whp range on stock everything. we should take everything apart to see what if anything is discernible from the damage (rod bolt let go, boost line of wastegate pop off, fuel pressure regulator vacuum line pipe off, wastegate stuck shut, could be any number of reasons, including knock, bad E85, boost spike, etc...) knock is usually pretty easy to see on the piston tops if that was the case. it could just be a weak rod.
some engines fail. simple as that. it really sucks when it happens, i know first hand how it feels (and on my old porsche of all the cheapest cars to replace motors in ). i've seen ring lands fail on pump gas, stock turbo, low boost tunes, and i've seen stock motors make into the 530+whp range on stock everything. we should take everything apart to see what if anything is discernible from the damage (rod bolt let go, boost line of wastegate pop off, fuel pressure regulator vacuum line pipe off, wastegate stuck shut, could be any number of reasons, including knock, bad E85, boost spike, etc...) knock is usually pretty easy to see on the piston tops if that was the case. it could just be a weak rod.
). i've seen ring lands fail on pump gas, stock turbo, low boost tunes, and i've seen stock motors make into the 530+whp range on stock everything. we should take everything apart to see what if anything is discernible from the damage (rod bolt let go, boost line of wastegate pop off, fuel pressure regulator vacuum line pipe off, wastegate stuck shut, could be any number of reasons, including knock, bad E85, boost spike, etc...) knock is usually pretty easy to see on the piston tops if that was the case. it could just be a weak rod.Keep us updated.
Good Luck
Last edited by Evo_Jay; Dec 29, 2009 at 01:47 AM.
Hey man i am right there with you. I got a J-tune on e85 on my evo at about 70kmiles stock motor. I was on 23lbs and i wld make 30psi meth evos look slow. I was trapping 117-120 range on 23psi falling to 30. So at 91k miles i go back and have a re-tune. I wanted 30psi so i cld race this friend of mines c6 z06. Well i get it tuned on 30psi and 1st gear tires no good, 2nd gear tires still no good, 3rd gear-hold on tight. **** was crazy. Long story short a week later i was going up a hill and gave it too much load, prob doing 40 in 5th gear. All of a sudden, boom.. Piston 1 had completly fatigued and decided to give up. It completly shattered cause me to throw a rod and put 2 holes in block. No sign of detonation. Tune was dead on. I was astonished how much beating my stock motor went through. Dnt worry when it is built with a bigger turbo, u will look back and laught at the fact. Wish the best of luck.
Well this really sucks for the op. Now he's got no car.
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well this really sucks for the op. Now he's got no car.
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well this really sucks for the op. Now he's got no car.
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well this really sucks for the op. Now he's got no car.
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
Well I been running my evo at least 1 time a week a whole night vs some muscle cars that just can't believe the stock turbo is capable of what it's doing and my car is going strong. Well if it makes a come back I'm sure it's gonna be one hell of a build
.i'm going to help Pure_evo out as much as possible, and hopefully we can find out why it failed.
