Diablosport Forums

ok so when i install the 87 tune with out touching tcm stuff the go fine off the line but when i let go of the gas then try again the truck starts to hesitate no matter how much i try. then once i stop it goes fine agian then same thing.

now heres my mods
cai afe stage 2
cat back exhaust
corvette servo

should i be running ds tune? or what could it be?

ok just tried the ds tune,same thing happens grrrrrr. Its goes fine at first then i let go of the gas it drop to about 1500rpm then i hit the gas again its like a huge pause then picks up rpms then nothing to the floor the trucks like no power at all. someone please help driving me nuts. when i put the backup back in the truck it runs fine.

how long of a delay is it that you are talking about from the time your hit the gas until the revs start to come up?

mmmm about 10 sec then if i put it in neutral then back in gear it starts going again then samething. only for the tunes 87 oct ds tune. if i use mod original backup works fine.

sorry just tried it again on 87 tune and 10 sec thing ain't happening after revs to about 5000rpm then let off the gas push down again nooo power just sits at about 1500 to 1600 rpm no matter how much i push to the floor grrrr. no idea but like i said put in neutral then back in drive, the truck picks up again then samething.

any ideas yet? should i post the oringinal backups on here? also for the tcm when i change some settings then install the tunes it says

original backup
(modified)

tcm original backup


it dosen't say modified for the tcm so is it making the changes? thankyou

here is the pcm

here's tcm

is this tool up to date?

yes just got it back from you guys needed a repair it has the latest gm crom in it. worked fine before with all the tunes 87 oct and ds tune, now its acting up with the 1r08k in it. Also when the unit was in for repair my truck got flashed because of a gm recall.

any ideas ?

checkin git out...nothing is standing out.

ok im going to try to install the 1r08k again worth a shot

ok didnt work GRRRRRR i did a data log with the 87 oct tune so ill post it see if you guys can figure it out.

here is the log i did with the 87 oct tune. the lines are all over the place when it happens. so bad that i had to pull over and take the tune out! please help.