Dundon headers?
#1
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I have been contemplating a set of dms headers, have read everything available, watched countless vids. My questions is for owners of gt4 w/ dms AND NO TUNE, do you get a CEL. I have a cpo warranty till 2022 and don't want the hassle should anything pop. Also anyone in south Fl willing to meet up and let me hear the car with dms or go for a ride, drinks on me afterwards.
thanks,
J
thanks,
J
#2
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I have Dundon and no issues with or without a tune. A friend had the same experience.
#4
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Ran them very briefly without the tune and had a CEL thrown BUT I suspect that was due to the IPD plenum which I've been told will typically be the culprit.
#5
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Right, it's impossible to get a CEL with the Dundon headers due to their design, and the IPD CEL will go away after the ECU adapts.
#6
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Interesting... any idea how long it takes to adapt? Thinking ahead to smog. Can’t have CEL. Will need to swap out the headers for stock and assume it won’t run well with the Dundon tune in stock headers so was thinking i’d Uninstall tune and then put it all back afterwards.
#7
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Interesting... any idea how long it takes to adapt? Thinking ahead to smog. Can’t have CEL. Will need to swap out the headers for stock and assume it won’t run well with the Dundon tune in stock headers so was thinking i’d Uninstall tune and then put it all back afterwards.
As far as CEL with no tune, it’s important to ensure no air leaks and keep your bolts on the flange to the stock exhaust tight.
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#9
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thanks for the replies everyone. Quick question, a post above stated its "impossible" to have a cel with the way the dundons are made. I would love specifics on that is, and if so why wouldn't every race header offer the same. Lastly what kind of miles are we talking with the race headers without cel, almost all OBD emission compliance system require a "double fault" to throw a CEL.
thanks again for the help guys/gals.
thanks again for the help guys/gals.
#10
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thanks for the replies everyone. Quick question, a post above stated its "impossible" to have a cel with the way the dundons are made. I would love specifics on that is, and if so why wouldn't every race header offer the same. Lastly what kind of miles are we talking with the race headers without cel, almost all OBD emission compliance system require a "double fault" to throw a CEL.
thanks again for the help guys/gals.
thanks again for the help guys/gals.
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Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com
www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports
Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com
www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports