2001 Mustang Bullitt pinging at WOT

broncobullitt · Post by **broncobullitt** » Thu Dec 10, 2009 9:23 pm

I just installed the 93 octane tune today only to find that as I pass 4500-5000 my car pings a lot. It did not do this before. For some odd reason this does not happen in 1st or 2nd gear either.

PN: 235332
2001 Ford Mustang GT Bullitt

concoursd · Post by **concoursd** » Fri Dec 11, 2009 3:15 am

may sound like a dumb question but are you running 93 octane fuel? You would not be the first customer to make that mistake.

broncobullitt · Post by **broncobullitt** » Fri Dec 11, 2009 8:13 am

Haha yes. I am running 93 octane from shell.

kmac1 · Post by **kmac1** » Fri Dec 11, 2009 3:44 pm

Do you have any modifications to the car? You may need to lower the spark advance a little in the adjustable parameters if everything checks out ok.

broncobullitt · Post by **broncobullitt** » Fri Dec 11, 2009 4:21 pm

i have a jlt ram air intake, hi-flow catted h pipe, loudmouth catback, 4.10 gears.

tuningss · Post by **tuningss** » Fri Dec 11, 2009 4:54 pm

Add 5-7% of fuel to the WOT Fuel parameter.

broncobullitt · Post by **broncobullitt** » Sat Dec 12, 2009 5:13 pm

still pinging.

tuningss · Post by **tuningss** » Mon Dec 14, 2009 10:55 am

Then remove a couple of degrees of timing.

Post by **mikel** » Mon Dec 14, 2009 11:47 am

What revision are we discussing here?

kmac1 · Post by **kmac1** » Tue Dec 22, 2009 4:53 pm

Mike makes a very good point. Make sure you have the latest revision installed, 9r07b.

Post by **06MonteSS** » Tue Dec 22, 2009 5:01 pm

and ditch the Shell gas....

get something better, like mobil, exxon, sunoco, amoco or bp...

many others, as well as my own personal experience, have had KR issues that were traced back and attributed to the Shell fuel... I know once I switched to Mobil, my Kr issues resolved themselves...

Post by **mikel** » Tue Dec 22, 2009 5:02 pm

kmac1 wrote:Mike makes a very good point. Make sure you have the latest revision installed, 9r07b.

Yeah, some of the older revision tunes for the Bullitt had some issues, the new ones rock.

broncobullitt · Post by **broncobullitt** » Mon Jan 18, 2010 8:46 pm

I got the latest revision finally and the car is still pinging pretty bad. I decreased the spark advance by 10% on both paramters, filled up with different gas and it still pings.

kmac1 · Post by **kmac1** » Tue Jan 19, 2010 10:30 am

you will probably need to pull more than 10%. In the area it is pinging 10% might only be 1-1.5 degrees of spark advance. You'll probably have to go at least 20-30% if it is pinging so bad you can hear it. You might even have an air leak somewhere or the maf signal is shifted due to the cold air kit. If you have access to a wideband AF meter it would be a good idea to do a couple pulls with it to see what your AF ratio is.

broncobullitt · Post by **broncobullitt** » Thu Feb 11, 2010 7:23 pm

I would have just figured that there would be a bullitt specific tune since it has a different intake than a GT and a different base tune. Is this something Diablosport can look into in the future?

2001 Mustang Bullitt pinging at WOT

2001 Mustang Bullitt pinging at WOT

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