[dumps]

has anyone encountered this problem? after i installed my kb tune i needed to change back to stock, and after reinstalling the kb tune back in i have a severe misfire / knock. after this i sent the sct back to kenne bell, they said everything was fine with the tune and even sent me a new sct. the car still sounds like a jackhammer but will not display a code. any ideas?

 

[TheUNZippee!]

Sounds like the timing is way off. I would keep after them for more help.

 

[GOTTORQ]

Sounds like the timing is way off. I would keep after them for more help.

Agreed, id keep after them, and assure them the cars not running well, and your timing could deffinitely be off

 

[HMUSN]

post up a data log.

 

[Trick Tuners]

It sounds like you got a bad tune, or have a mechanical issue. Never let the motor knock!!! Read this on detonation. And then this about widebands Try working with KB, but if you can't get your tune straightened out let me know and i can help with the tuning.

 

[06RedfireGT]

Get a dyno tune.

 

[dumps]

knock

thanks for the reply guys but the problems not the kb tune because the first time i loaded the tune it worked fine. its only when i returned it to stock then back to kb that it started knocking, i tried returning it to factory stock and the same thing happens. nothing like having a new kb on your car and not being able to drive it, especially when its nice and sunny here in southern nj. i tried to go onto the sct troubleshoot forum but it is saying that its down for updates since 11/28/07.

 

[TheUNZippee!]

Did you try disconnecting the battery for 15 minutes, and then starting from scratch again? I haven't done this myself, so I don't know if it holds any truth, but I've seen other guys saying that doing so resets things in the PCM.

It's worth a shot for what it takes to disco the battery for 15 minutes.

 

[06RedfireGT]

:withhomo

 

[Trick Tuners]

when you say return to stock do you mean you pulled the blower and reinstalled the intake?

 

[dumps]

knock

no, i just installed the stock tune and left the blower on just to see if it would idle regular which it did not. i also tried the reset the ecm thing with no luck. the problem must be with the ecm or the x cal.

 

[stanglifemike]

no, i just installed the stock tune and left the blower on just to see if it would idle regular which it did not. i also tried the reset the ecm thing with no luck. the problem must be with the ecm or the x cal.

How long did you run it this way?

 

[Juggalo_X]

Pull 3 degrees of timing. if that helps your luky and its just a timing issue.

 

[Trick Tuners]

Make sure the chip contacts are super clean and rule out any vacuum leaks.

 

[dumps]

im pretty sure there are no vac leaks i was through with install and went back over everything a couple times after. to answer the other question i only ran the car for a couple seconds at idle a few times, im a diesel mechanic so im pretty auto inclined.

 

[dumps]

oh, by the way my a/f meter is reading very lean which i think is caused by cylinders misfiring due to computer. keep in mind that the tune provided by kenne bell was running well at one point before i returned to stock and then back to kb. i fear that i might have to send the car to ford to get the ecu checked by the dealers computer. i already called ford parts for new ecm which costs $600+ alone not including the cost to have ford flash the new ecm.

 

[Trick Tuners]

If you have the big tube CAI you can get up to a full AF point of "adjustment" by messing with the flexible tube in front of the maf and clocking of the MAF.

 

[dumps]

i just think this goes well beyond just a simple a/f problem, i contacted sct and they said it probably a stuck frame in the ecm, which is not changing paremeters in ecm when being tuned. sct says to take it to get a custom tune or to ford to check the ecm. not looking forward to the bill for that one.

 

[dumps]

i gone and done it, i'm taking it to big daddys performance in lakewood nj for a custom tune and perhaps cams, not sure i have to talk to him about it. i'm tired of playing around with it and need professional help. thanks guys for all the advice you have given me i appreciate it.

 

[TheUNZippee!]

Best of luck with her dumps. Bring that baby back and let's see some pictures of the finished product.