coolant temp goes from 192 to 206....why?
May 24, 2010, 01:42 PM
#16
Umm....206 is not overheating...lol. This is a normal operating temp. 220+ is a problem. After a 4th or 5th gear run, most will see temps into the 210 range, which then should quickly recover back into the 185-200* range. This is normal. I don't trust your tuner...lol. My advice, get a new one.
May 24, 2010, 02:46 PM
#18
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Just got your logs and noticed a couple things, your coolant heat doesn’t appear to be a problem to me…but your knock does:
#1 - No boost or load is being logged, log one of those (preferably load), as it helps determine what cells on the fuel and ignition maps are being accessed.
#2 – I could mistake your log for one of mine, they look really similar as far as how your coolant and intake temps plot. So if your head gasket is blown then mine is too.
#3 – I’m seeing knock from 5500rpm up
#4 – I’m not seeing AFR logged so I’m not sure if you are lean
#5 – You are running about 2deg more timing than I am above 6300rpm (but at peak torque we are about the same), but your cams may allow that
Here are some possibilities for your knock:
#1 – You are lean up top, but we don’t know because AFR isn’t logged
#2 – Too much timing up top, possible, but the timing isn’t really crazy
#3 – Boost leak is causing the turbo to overwork itself; and it is blowing hot air which is more prone to detonation
#4 – Bad Gas??
Here are my suggestions:
#1 – Fill up with some known good gas
#2 – Boost leak check
#3 – If that doesn’t work remove 1-2deg up top on your timing
If you are still knocking you’ll need to see if it’s because you are lean.
#1 - No boost or load is being logged, log one of those (preferably load), as it helps determine what cells on the fuel and ignition maps are being accessed.
#2 – I could mistake your log for one of mine, they look really similar as far as how your coolant and intake temps plot. So if your head gasket is blown then mine is too.
#3 – I’m seeing knock from 5500rpm up
#4 – I’m not seeing AFR logged so I’m not sure if you are lean
#5 – You are running about 2deg more timing than I am above 6300rpm (but at peak torque we are about the same), but your cams may allow that
Here are some possibilities for your knock:
#1 – You are lean up top, but we don’t know because AFR isn’t logged
#2 – Too much timing up top, possible, but the timing isn’t really crazy
#3 – Boost leak is causing the turbo to overwork itself; and it is blowing hot air which is more prone to detonation
#4 – Bad Gas??
Here are my suggestions:
#1 – Fill up with some known good gas
#2 – Boost leak check
#3 – If that doesn’t work remove 1-2deg up top on your timing
If you are still knocking you’ll need to see if it’s because you are lean.
May 24, 2010, 03:27 PM
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hey thanks a lot for ur help! these logs were just what the tuner sent me. i may be going to my original tuner sometime this week for him to check it out. ill check for boost leaks again...last time i had a boost leak it was my throttle body shaft seals...i fixed that and haven't done another test yet.
how can i log myself so i can put them up on here?
how can i log myself so i can put them up on here?
May 24, 2010, 03:59 PM
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You'll need a cable (I use Tactrix) and software, most likely EvoScan.
Also one other thing to think of...did you get tuned in the cold weather, and now it's hot and you are knocking? That's a possibility too...
Also one other thing to think of...did you get tuned in the cold weather, and now it's hot and you are knocking? That's a possibility too...
May 24, 2010, 04:07 PM
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where can i download evo scan? maybe i will have to buy a tactrix cable and do some logging...i will do another boost leak test as well...i just dont know what else to do
May 24, 2010, 05:05 PM
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well im glad to hear that...i really wouldnt think the head gasket would go on my car...the way i drive...i should be driving a toyota prius
May 24, 2010, 05:37 PM
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haha i am worried and im bummed that i made such little power when i know i can make way more!
i bought a new turbo, cams, injectors, intercooler and gained 50whp....most guys are making like 400whp with the setup i have....ill email you the boost and afr thing...
thanks a lot...i already sent the logs lol
i bought a new turbo, cams, injectors, intercooler and gained 50whp....most guys are making like 400whp with the setup i have....ill email you the boost and afr thing...
thanks a lot...i already sent the logs lol
May 24, 2010, 06:22 PM
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That log from your dyno run looks good too. One thing however, your tuner isn't pushing you for max power, they are tuning you for safe reliable power. You are 11.2 at peak torque going to 10.9 at max hp. I assume you can pick up 10-15hp with a more agressive tune at the expense of some reliability. Remember however, your tuner has to insulate himself from risk. If he tunes a car and it blows up 2 weeks later he is liable. So most tuners are going to give you a safe tune so they don't get sued.
The knock isn't from AFR as long as the current state of the car hasn't changed from these logs. It's either from bad gas, boost leak, or increased heat in the air. And based on the fact you have a better FMIC than me, larger cams, and a fatter AFR...the increased timing I noticed is fine.
My bet is something has changed since these logs. Probably a boost leak...
The reason your HP is low however is the boost level. 25psi on your setup is low for when people really start pushing the BBK and going for power. If you retune for 30psi I bet you'd be over the 400whp mark. If you go for 30psi on E85 using map switching you'll have a killer setup.
The knock isn't from AFR as long as the current state of the car hasn't changed from these logs. It's either from bad gas, boost leak, or increased heat in the air. And based on the fact you have a better FMIC than me, larger cams, and a fatter AFR...the increased timing I noticed is fine.
My bet is something has changed since these logs. Probably a boost leak...
The reason your HP is low however is the boost level. 25psi on your setup is low for when people really start pushing the BBK and going for power. If you retune for 30psi I bet you'd be over the 400whp mark. If you go for 30psi on E85 using map switching you'll have a killer setup.
Last edited by dyezak; May 24, 2010 at 06:26 PM.
May 24, 2010, 06:31 PM
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alright thanks a lot for your help! its people like you that make this site helpful because i have very little knowledge in terms of tuning. i agree with you 100% about the tuner and will run a boost leak test ASAP.
the only thing that i can think of that may have caused my low numbers was my ngk bpr7es plugs were like 9 months old. after i got the tune i replaced them with ngk bpr8es plugs gapped to .028
the only thing that i can think of that may have caused my low numbers was my ngk bpr7es plugs were like 9 months old. after i got the tune i replaced them with ngk bpr8es plugs gapped to .028