Problem with Predator

03silversrt4 · Post by **03silversrt4** » Wed Feb 18, 2009 5:08 pm

I have and 03 SRT4 with big turbo and all of the supporting mods. Well I was having problems with 9r13 not changing my rev limit so i updated to 9r16 now it still wont change my rev limit and now when i nail it anywhere below 4k it runs REALLY lean like upper 13's afr but as soon as i get past it then it instantly drops to 9.0... Before the update it would run really rich on the 93 performanc tune now it does that. then the last thing is my paramaters to change wot fuel at 6-7k are gone 6-7k spark is there though. Oh and for some reason it says my speed limit is over 56,000. I tried to download it again but it still doesnt work. I forgot one more thing about running lean. I datalogged with my dtec and when its running lean it says my injector duty cycle is in the teens even dropping to around 6% but then when it goes rich they jump to the 80's.

Any help would be greatly appreaciated.

Calid is 04510055AC

If you need any other information just let me know

03silversrt4 · Post by **03silversrt4** » Thu Feb 19, 2009 1:46 pm

anybody have any ideas?

Post by **sohfast94** » Thu Feb 19, 2009 2:07 pm

Set all the parameters back to stock and then try. The speed limiter is already taken off in the tunes.

03silversrt4 · Post by **03silversrt4** » Thu Feb 19, 2009 2:35 pm

I have... I have also tried to redownload the update aswell. Nothing works.

Post by **sohfast94** » Thu Feb 19, 2009 3:45 pm

Wait a minute. You have a big turbo? You need a custom tune.

03silversrt4 · Post by **03silversrt4** » Thu Feb 19, 2009 6:59 pm

when i originally flashed PCM with the DS and before i tuned it, it would run in the 9's AFR then i tuned it and everything worked fine except i couldnt change the rev limit. So then i figured i needed to up date it in order to change the rev limit but when i did everything went to hell... It still wont change the rev limit and from 0-4k it runs upper 13's afr until right after 4k then it drops to low 9's. So why would the AFR's change like that with just an update? also why am i still not able to change the rev limit?

sfla_srt4 · Post by **sfla_srt4** » Fri Feb 20, 2009 1:43 am

are you seeing those a/fs on a wideband or the Open loop FA pid on the predator??? I hope you have a wideband in there..... You NEED a custom tune as well

03silversrt4 · Post by **03silversrt4** » Fri Feb 20, 2009 1:49 am

Yes I have a wideband. I datalog with dtec and the DS. and yes the dtec is zeroed. But I don't get why there is such a difference when all I did was do an update. And I still have yet to be able to change the rev limit ever.

sfla_srt4 · Post by **sfla_srt4** » Fri Feb 20, 2009 1:51 am

You have a big turbo and other mods trying to run a tune that is made for a stock car.. You need to rescale the injectors, Map/tip(if their changed) and get a custom tune for the mods you have.. You need to contact Rage, or some of the other internet vendors to write you a tune.. Visit SRTFORUMS and go to the "Diablosport Workgroup" section and cruise around there.. There is TONS of info there and make sure to read all of the stickies up top.

03silversrt4 · Post by **03silversrt4** » Sat Feb 21, 2009 2:42 am

This still doesnt explain the sudden change just from updating or the fact that i cant change the rev limit. What would stop me from being able to change my rev limit?

Denver8898 · Post by **Denver8898** » Mon Feb 23, 2009 11:56 pm

My predator is doing the same thing.. my car been at the shop a couple of days to get a custom tune for my Big turbo and the other bolt ons. the predator is not able to change anything to my ecu.. they've went back to stock and still nothing.

never_satisfied · Post by **never_satisfied** » Tue Feb 24, 2009 4:31 am

i have u7134-9r13.crom if you want to try it again.

28patrick28 · Post by **28patrick28** » Wed Feb 25, 2009 2:39 pm

My parameters work, but rpm parameters doesnt seem to work on my side too

03silversrt4 · Post by **03silversrt4** » Sat Feb 28, 2009 7:41 pm

Anyone have any ideas why we cant change the rev limiter?