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Tune Review

Unread postby Lou02stang » Thu Dec 20, 2018 5:32 pm

I am working with a prominent mail order tuner and having problem with idle. on My first 3 datalogs STFT is .75 on bank 1 and bank 2 during 2 minute datalog. My innovate wb is at 22.4 if I hit the gas to say 1700rpm it drops to like 16. Tuner added fuel about 4 times by multiplying MAF transfer table by 1.3 but still runs lean at .75. On the last datalog about 1:30 min into log the STFT jumped to 1.03 bank 1 and 1.25 bank 2. For like 8 seconds and then back to .75. My setup is a 2001 2v with a MMR 750 4.75 shortblock ported heads stage 2 CMS turbo cams single FF On3 with a Precision 767560lb injectors HPXE 05 slot MAF any help is appreciated. Thanks
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Lou02stang
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Vehicle Information: 2001 2v with a MMR 750 4.75 shortblock ported heads stage 2 CMS turbo cams single FF On3 with a Precision 7675 60lb deka injectors HPXE MAF

Re: Tune Review

Unread postby decipha » Thu Dec 20, 2018 7:41 pm

well first off its jumping in to closed loop too early the hego was clearly cold in the log until it got to 90 sec et thats AFTER it was already running and u started the log

at 90 et hego1 went full rich and hego2 was dead, its obvious you have a misfire on bank 2 the driver side of the engine

whats odd is that hego1 went cold again

id check that the hego wiring is intact and put it in open loop down low
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Re: Tune Review

Unread postby Lou02stang » Thu Dec 20, 2018 8:42 pm

Looks like both banks hego1 and hego2 went full rich at 90 and then dead at 119. What would cause something like this to happen?
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Lou02stang
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Posts: 4
Joined: Thu Dec 20, 2018 5:20 pm
Vehicle Information: 2001 2v with a MMR 750 4.75 shortblock ported heads stage 2 CMS turbo cams single FF On3 with a Precision 7675 60lb deka injectors HPXE MAF

Re: Tune Review

Unread postby decipha » Thu Dec 20, 2018 9:20 pm

fuel trim is useless by itself
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decipha
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Posts: 16028
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce
07 GMC 2500HD 6L - Veranafer

Re: Tune Review

Unread postby Lou02stang » Thu Dec 20, 2018 10:19 pm

PM’d you
Lou02stang
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Posts: 4
Joined: Thu Dec 20, 2018 5:20 pm
Vehicle Information: 2001 2v with a MMR 750 4.75 shortblock ported heads stage 2 CMS turbo cams single FF On3 with a Precision 7675 60lb deka injectors HPXE MAF

Re: Tune Review

Unread postby Lou02stang » Sat Dec 29, 2018 2:31 pm

Found a intake leak and changed o2 sensors please tell me what you think. looks like to me bank 2 is a little off still .Thanks
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Lou02stang
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Posts: 4
Joined: Thu Dec 20, 2018 5:20 pm
Vehicle Information: 2001 2v with a MMR 750 4.75 shortblock ported heads stage 2 CMS turbo cams single FF On3 with a Precision 7675 60lb deka injectors HPXE MAF

Re: Tune Review

Unread postby decipha » Sun Dec 30, 2018 1:19 pm

csv logs suck and take forever for me to setup and look at, if its running fine best to just let your tuner dial it in
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decipha
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Posts: 16028
Joined: Mon Jul 15, 2013 5:29 pm
Location: New Orleans, LA
Name: Michael Ponthieux
Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce
07 GMC 2500HD 6L - Veranafer


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