C5 Vette headers & X pipe question
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Heel & Toe
Joined: Aug 2020
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C5 Vette headers & X pipe question
So I have headers & an x pipe I been meaning to put on my corvette & ive been looking around for information on this and I can’t really find the exact answer. So I’m gonna remove my A.I.R system because the headers don’t have that lil piece or whatever it’s called 🤣 and because I’m removing my cats I know I have to get it tuned out because I’ll get the CEL. I seen somewhere that if you remove the cats & the A.I.R system without a tune your car goes into “limp” mode and you can’t drive over 30 or 80 mph (i forgot which one). Is that true ? And I have a predator Platinum 2 (somehow I was able to get it into Cali where I’m located ; it’s illegal here lol) would I be able to get a custom tune for it on that or would I need something better like HPTuners ??
Last edited by DeeLavene; Aug 20, 2020 at 12:32 AM.
Le Mans Master
Joined: Oct 2010
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From: cold & windy
unless the predator gives you selectable options to turn off those functions & reflash the computer, you'll need to get a new tune. find a reputable person to do your car (using software like HP Tuners or EFI Live)... or buy a program to start learning to tune your own.
can't speak to the limp mode, as mine removed the AIR, added exhaust, & got tuned all at once.
can't speak to the limp mode, as mine removed the AIR, added exhaust, & got tuned all at once.
Thread Starter
Heel & Toe
Joined: Aug 2020
Posts: 15
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unless the predator gives you selectable options to turn off those functions & reflash the computer, you'll need to get a new tune. find a reputable person to do your car (using software like HP Tuners or EFI Live)... or buy a program to start learning to tune your own.
can't speak to the limp mode, as mine removed the AIR, added exhaust, & got tuned all at once.
can't speak to the limp mode, as mine removed the AIR, added exhaust, & got tuned all at once.
what tune did you get ? a dyno tune or handheld tune ?
3rd Gear
Joined: Aug 2020
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From: Picayune, MS
I didn't run into any form of limp mode after installing my catless headers and CAI, but I didn't drive it more than 50 miles before having it tuned.
I have a 2003 manual coupe, so if yours is different you may have different results.
I have a 2003 manual coupe, so if yours is different you may have different results.
Le Mans Master
Joined: Oct 2010
Posts: 7,373
Likes: 1,128
From: cold & windy
actually... come to think of it, mine didn't get tuned for a month while i was waiting on the correct supercharger accessory box to get swapped out.
and i ended up road tripping it on the stock tune with LTs (had high-flow cats, though) & no AIR pump. never limped or threw a CEL, but it did get a little better gas mileage from running a touch lean (as expected).
and i ended up road tripping it on the stock tune with LTs (had high-flow cats, though) & no AIR pump. never limped or threw a CEL, but it did get a little better gas mileage from running a touch lean (as expected).
Thread Starter
Heel & Toe
Joined: Aug 2020
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I have the DiabloSport Predator Platinum 2 7210 and it’s tuned on the 91 Octane tune currently, the only mods done so far are a Vararam CAI and a muffler delete. If it don’t go into limp mode then I’ll go ahead and install it. Also my C5 is a 01’ Auto.
Last edited by DeeLavene; Aug 25, 2020 at 10:32 PM.
