PE mode
Which tables are affecting the PE mode in 2009 ZR1 (E67)? I know that B3618 will do, but what are the others?
Also, from your experience what is the value that if I reach in B3618 table while aiming for 12:1 AFR I would say to myself there is something wrong and I need to review other tables.
< 11.6 and > 12.4
outside the that range means your VE/MAF error is greater than +/-3.33%.
Are these the actual value in B3618?
Am asking this because I have reached 2.2 in the table and am still getting 10:1 afr ( while the maximum number in the stock tune is only 0.72).
My question is should I increase the table value till I reach the 12:1 or I should look somewhere else ( other tables).
Note: upgrades are supercharge pulley, camshaft, headers and exshaust system. Stock injectors.
Are you using a wideband...?
Any greater difference than say +/-3.33% between the wideband and B3618 means the air source needs correcting.
You specifically said "12:1"
What units is your B3618 displayed in...?Originally Posted by the devil
2.2 Lambda is extremely lean (AFR 32.3, engine won't run)
0.72 Lambda is on the rich side of boost-rich high-load (AFR 10.6)
To give the full story, after installing the part i start tuning the car (idle, part throttle, spark tables, rev limits, PE, etc.). The first three are OK car idle great with no issues, the AFR in part throttle mode is between (14.3 and 14.9) and no knock retard. But when it comes to Full throttle (PE mode) i started from 0.72 Lambda which is the factory tuning and I kept increasing the number till I reached the 2.2 Lambda without any luck the AFR fluctuate between 10.0:1 and 10.5:1 in the wideband. At that point I stopped increasing the number because am way too lean AFR = 31.
Now am sure that there are other tables affecting the PE mode car is choosing the richer table but in E67 what are these table?
(I know that to make thing easy I better post a log and a tune, but the problem is that am away from home these couple of days I’ll try to post them once I come back, so please bear with me)
12.0:1 is my AFR target at WOT, but the car is stuck on 10.5:1 AFR.
Did you correct the VE and MAF tables...?
Last edited by joecar; July 2nd, 2012 at 02:22 AM.
Not correcting the air sources (VE and MAF tables) will mean your target PE AFR might not be consistent and part throttle driveability/performance will be poor.
Last edited by joecar; July 3rd, 2012 at 01:37 PM.
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