Firehawk hesitates at WOT HELP!!!!!!!!!!

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Mar 5, 2011 | 03:25 PM

mp_ranger

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Firehawk hesitates at WOT HELP!!!!!!!!!!

First of all, Thank you for taking the time to read and help, second I have a Procharged P1 firehawk. The car was tuned using an SCT tuner instead of the Diablosport tuner. The vehicle runs awesome lots of power etc. So a couple of weeks ago my SES light came on throwing codes for the O2 sensors. both Bank 1 sensors were bad even though they were like 5 months old. They are the vette sensors. So i replaced them with the warranty i had and the codes went away. problem im having now is that when the throttle is half way or WOT my Air/Fuel gauge will read 10.0. It will go from 15.6 to 10.0 and hesitates. Is it the tune or is there anything else i'm missing? Any help will be appreciated Thank You

Mar 5, 2011 | 04:41 PM

mp_ranger

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any help i know someone has some info

Mar 5, 2011 | 07:30 PM

Slowhawk

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Hard to say. Have to log the motor with HPT or EFI live to see whats it doing.

Mar 5, 2011 | 08:56 PM

MontecarloDrag

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If the tune was running good before, then you can rule it out. Tune doesn't change by itself.
You need to find the problem for the excess fueling. Check if the new O2 are working good.
Are there any DTC's?

Mar 5, 2011 | 09:04 PM

madmike9396

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think ive seen some few cases where the tune has changed by its self !!
Dont quote me tho. pretty sure i seen a thread on here

Mar 6, 2011 | 07:25 AM

89 formula350

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o2 main harness wires rubbing through? bad plug wires arching under load.. most likely

Mar 6, 2011 | 07:01 PM

mp_ranger

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no DTC codes no nothing the plugs are about 5 months old and the wires are MSD and are 3 months my guess is that the tune can be off cause of the O2 sensors i just put in. I have heard of tunes needing re-adjustment hope not though. anyone think its the MAF?