PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Do i need a tune?

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Old Feb 25, 2009 | 02:26 AM
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Default Do i need a tune?

So i got a problem.... when i am from a dig and on the highway if i give my car WOT the rev limiter comes in before the shift point so my car dont shift until i let off the gas a lil bit.... but then when i get in to the next gear and try to WOT then it shifts down and hit rev limiter again... i had the tranny rebulit and its still doing it.... ugh.. do i need a tune? maybe change the shift points and back off the rev limiter??? let me know asap guys..

Thanks

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Old Feb 25, 2009 | 02:50 AM
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yeah you need to either lower your shift point or raise your rev limiter................then again your trans man might need a swift kick in the rear.

What rpm is the limiter kicking in at?
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Old Feb 25, 2009 | 02:53 AM
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well it was doing all this before i took it to the tranny shop.. umm i am really not sure about the rpms... i think the rev limiter is coming in at like...... 5800.... dont quote me tho.
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Old Feb 25, 2009 | 03:07 AM
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did you take it to the tranny shop because it was slipping or because of this issue? Who tuned your car previously?

You know you can get a free version of tuner cat and DIY right?
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Old Feb 25, 2009 | 03:14 AM
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no i didnt know about the free tuning software.. but i would not know how to use it anyways... and i took it to the tranny shop because of this problem... and it was and still is completely stock.. never tuned or nothing just the oil changed and air filter changed..
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Old Feb 25, 2009 | 03:27 AM
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its pretty damn easy to be honest, I could step you through it. Go to tunercat.com and download the free software. You need to buy a $20 definition file to get the software to work for your car and then you need an $80 cable (or at least thats what it cost back in 03). You can tune your own car with that software.
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Old Feb 25, 2009 | 03:35 AM
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yea but that aside(ty very much!!!) My tranny guy said he will pay for my tuning so i was think about getting it tuned by chuck for chuckstuning.... will that help? where do i buy the cable and the folder and crap?
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Old Feb 25, 2009 | 11:07 AM
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Yea, I'd like to know about this free tuning BS too.
Just for entertainment to be honest, I've dicked around with that making your own OBD1 cable, save yourself the headache.

I ended up getting the Moates APU1 kit for OBD1 vehicles, you can use it with any scanning program.

To the OP I might comment about the trans issue if you said what car, year, etc, that you're dealing with.
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Old Feb 25, 2009 | 04:21 PM
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free tuning BS? ok man whatever. Ask any OBDI tuning guy if its bs.

I didn't have to make my own cable, it was already made and it was 80 bucks.


OP, never heard of chuckstuning, but if he knows what hes doing then yes it will help.
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Old Feb 25, 2009 | 04:22 PM
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Originally Posted by mj114679
yea but that aside(ty very much!!!) My tranny guy said he will pay for my tuning so i was think about getting it tuned by chuck for chuckstuning.... will that help? where do i buy the cable and the folder and crap?
I had this exact same problem, but it was after they had installed a stage2 shift kit.......it was because the solonoid was getting flooded and not letting it shift......just a thought.......
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Old Feb 25, 2009 | 04:32 PM
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Thanks guys keep the thoughts coming!!!
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Old Feb 25, 2009 | 04:51 PM
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I think we pretty much answered it for you.
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Old Feb 25, 2009 | 06:33 PM
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Originally Posted by 9000th01ss
...

To the OP I might comment about the trans issue if you said what car, year, etc, that you're dealing with.

+1

off the cuff though, my money is on the trans.

Besides answering what was quoted above, answer this: does the car have a stock PCM? I mean, has it been been tuned before or is it OEM?
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Old Feb 25, 2009 | 10:07 PM
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all oem. never been tuned. sorry guys its a 95 z28 4l60e
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Old Jun 19, 2009 | 05:35 AM
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Bump!!!!
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