Custom Tunes: potentially unsafe timing levels? - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 04-18-2016 Thread Starter
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Question Custom Tunes: potentially unsafe timing levels?

Was at Knott's Berry Farm yesterday for the Fabulous Fords weekend. Great show everybody.

Was at the Ford performance parts display and picked up a free Ford performance parts catalog. In the book there's a section on tuning calibrations. It says that aftermarket tuners other than Ford Performance do a few tricks they do not recommend, such as: Turning off the inferred catalyst, oxygen sensor and exhaust valve temperature protection logic. These parts prevent the PCM from richening the A/F ratio to protect these components which can result in more power under certain conditions. But this drastically decreases durability of the pricey parts which can make the check engine light come on, as well as increased emissions due to failed catalytic converters. Ford also says that they may advance spark timing to potentially unsafe levels meaning to the overall life of the engine.

Just thought this was interesting and would share. The show at Knott's yesterday was awesome!

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post #2 of 4 (permalink) Old 04-18-2016
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Almost nobody does this stuff anymore, other than the cat overtemp protection being switched off when people remove catalytic converters from the car or switching off the rear O2s when they go with longtubes sometimes. Neither of these are a risk. People really understand what the oyote wants now. These statements are holdover thoughts from 2010 when some people were taking unsafe risks because they did not fundamentally understand the engine's needs and this cost some people some motors. You don't hear about motor blows anymore hardly at all becasue all the reputable tuners know their **** by now.


2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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post #3 of 4 (permalink) Old 04-18-2016 Thread Starter
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Quote:
Originally Posted by 5LHO View Post
Almost nobody does this stuff anymore, other than the cat overtemp protection being switched off when people remove catalytic converters from the car or switching off the rear O2s when they go with longtubes sometimes. Neither of these are a risk. People really understand what the oyote wants now. These statements are holdover thoughts from 2010 when some people were taking unsafe risks because they did not fundamentally understand the engine's needs and this cost some people some motors. You don't hear about motor blows anymore hardly at all becasue all the reputable tuners know their **** by now.
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post #4 of 4 (permalink) Old 04-18-2016
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On the timing front, I've datalogged a bunch of tunes on my car and I have not seen dangerous WOT timing levels on any of them, all in, 25-27 total, nbd on a DOHC aluminum motor with super-efficient heads like these.

2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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