OTS Stage 1 Issues
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OTS Stage 1 Issues
Hey guys,
New to this forum and the car in general (first turbo car!). I just flashed my Evo X GSR with Cobb's OTS stage 1 91 Octane Map and am having some issues. I am overboosting to 28 PSI and getting knock sums of 1-2 during WOT. I know the AP AFR gauge isn't as accurate as a wideband but it's giving me AFR readings of 10.2 - 11.7 at idle/cruise and WOT. I would imagine it can't be that rich! Mostly around 11.2 though. I have 93 octane in the car right now. Should I try to flash to a LWG 91/93 octane map?
Here are some datalogs that I took. Apologies in advance for the terribly long files!
Any help/advice you can provide would be appreciated. It's still a learning curve for me so please take it easy.
<b>I will be getting a protune but not for another year or so.</b>
Thanks!
New to this forum and the car in general (first turbo car!). I just flashed my Evo X GSR with Cobb's OTS stage 1 91 Octane Map and am having some issues. I am overboosting to 28 PSI and getting knock sums of 1-2 during WOT. I know the AP AFR gauge isn't as accurate as a wideband but it's giving me AFR readings of 10.2 - 11.7 at idle/cruise and WOT. I would imagine it can't be that rich! Mostly around 11.2 though. I have 93 octane in the car right now. Should I try to flash to a LWG 91/93 octane map?
Here are some datalogs that I took. Apologies in advance for the terribly long files!
Any help/advice you can provide would be appreciated. It's still a learning curve for me so please take it easy.
<b>I will be getting a protune but not for another year or so.</b>
Thanks!
#3
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The car is safe to drive. Just don't beat the hell out of it (full boost/throttle) until you get the issue sorted out. Try running the LWG map. Make sure to use the right octane.
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Thanks for the reply! I flashed it to stage 1 lwg. Looks like I'm peeking at 26psi which isn't terrible. AFR on the AP is still 10.2-11.7 idle and cruise though.
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#6
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Originally Posted by romey
Thanks for the reply! I flashed it to stage 1 lwg. Looks like I'm peeking at 26psi which isn't terrible. AFR on the AP is still 10.2-11.7 idle and cruise though.
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Thanks for confirming the PSI guys. I'm just confused on the AFR and why it's running so rich. Knock sum has mostly been 1-2 with one 3rd gear pull up to 3 which I believe is within the accepted range.
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#8
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Is that per driving session? Or every time you do a pull?
You should be hearing from Cobb soon. They usually respond to emails pretty quick. Great customer service IMO.
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#12
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Maybe I'm really **** but the COBB website does not say for the Stage 1, 91octane map that the peak psi is 26lbs.
Straight from their site:
Stage 1 Maps (Map0 – Performance, Map1 – Economy)
Stage 1
o Boost Control Solenoid: Stock with stock restrictor pillso Exhaust Requirements: Stock (aftermarket cat-back will not affect tune)o Intake Requirements: Stock airbox with stock air filtero Boost Targets: 23.5 PSI peak tapering down to 17 PSI by the 7700 RPM redline (+/-1.5 PSI)
Mind you my AP at WOT never reads 23.5. It's always reading at 25-27PSI. Not sure if it's 100% accurate but maybe someone from COBB can chime in and elaborate.
Straight from their site:
Stage 1 Maps (Map0 – Performance, Map1 – Economy)
Stage 1
o Boost Control Solenoid: Stock with stock restrictor pillso Exhaust Requirements: Stock (aftermarket cat-back will not affect tune)o Intake Requirements: Stock airbox with stock air filtero Boost Targets: 23.5 PSI peak tapering down to 17 PSI by the 7700 RPM redline (+/-1.5 PSI)
Mind you my AP at WOT never reads 23.5. It's always reading at 25-27PSI. Not sure if it's 100% accurate but maybe someone from COBB can chime in and elaborate.
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I'm still hitting around 26 PSI on the LWG map. I'm running the 93 octane map and also have knock pretty consistently. Highest knock sum is still 2 and it happens throughout the rev range.
#14
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a knock of two doesnt seem bad at all but I would send your logs to Cobb to make sure.
FYI - I have sent some logs to Cobb and they informed me that 3 knocks equal 1 degree of timing change.
FYI - I have sent some logs to Cobb and they informed me that 3 knocks equal 1 degree of timing change.
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