Hitting rev limiter with AODE

[King Cobra 22]

OK,so far the only problem I'm having with the H/C/I is I'm hitting the rev limiter during shifts with my AODE.I do have 4:10's and a shift kit.
I know I will need a chip to fix that.

Is the car slower when it hits the rev limiter during a shift?
Will it run slower times is what I mean.

I'm guessing yes. If so how much slower is it slowing me down.

 

[wytstang]

Yes the puter is killing spark when the limiter is hit. How much power are you losing.....not sure. It will slow you down cause the engine is hitting a brickwall sort of speak. When spark is killed the O2s read a rich condition telling the puter to lean out which in turns keeps killing your power.

 

[Don 95Vert]

Yes the puter is killing spark when the limiter is hit. How much power are you losing.....not sure. It will slow you down cause the engine is hitting a brickwall sort of speak. When spark is killed the O2s read a rich condition telling the puter to lean out which in turns keeps killing your power.

Sorry, this is wrong. The factory rev limiter cuts fuel - not spark, so it goes dead lean - there isn't enough fuel there for it to cause any damage, but it WILL hurt ETs in a big way because the intent is for it to stop the motor at a certain RPM. Aftermarket ignition boxes like MSDs cut spark. Either method isn't so great for the motor because of the rapid torsional changes the motor goes through (fast-slow-fast-slow, etc.). The other way it is hurting is the fact that you are shifting too high for you combo. Getting the correct shift RPMs is one of the little things that really help times.

 

[wytstang]

I stand corrected.....Thanks for the info Don

 

[King Cobra 22]

Don, can LaSota Racing burn me a chip to improve my shifting,change the shift points and increase the rev limiter on my H/C/I mustang?

 

[Don 95Vert]

Yes, we can - we do a LOT of chips for 94-95 AODE's with gears just to fix shifting problems with gears. It will fix the shift points and converter lockup points, firm up the shifts as well as give a decent performance increase. Normally the rev limiter won't have to be raised because the shift points will be fixed, but we can do that too if you want. We also remove any speed limiters and can remove all the smog crap and raise idle speed if you want. We do chips individually based on the car - no cookie cutter chips. The only thing that would prevent us from doing one is is your MAF and injectors are not stock - the only way we do chips for those cars is if you either buy or have a wideband and are willing to do some datalogging and mailing of the chip back and forth - we don't like to guess on non-stock tunes. Email me at [email protected] if we can help.

Thanks!

 

[King Cobra 22]

Yes, we can - we do a LOT of chips for 94-95 AODE's with gears just to fix shifting problems with gears. It will fix the shift points and converter lockup points, firm up the shifts as well as give a decent performance increase. Normally the rev limiter won't have to be raised because the shift points will be fixed, but we can do that too if you want. We also remove any speed limiters and can remove all the smog crap and raise idle speed if you want. We do chips individually based on the car - no cookie cutter chips. The only thing that would prevent us from doing one is is your MAF and injectors are not stock - the only way we do chips for those cars is if you either buy or have a wideband and are willing to do some datalogging and mailing of the chip back and forth - we don't like to guess on non-stock tunes. Email me at [email protected] if we can help.

Thanks!

That sounds great! ....but I have a 75mm MAF and 24lb injectors.
So you can't do a chip for my car huh?

 

[Don 95Vert]

24's USUALLY are OK -as long as it idles and runs OK now, without a chip, you should be OK, and I'd do it - It's the blower cars or cars with radical cams and 42# injectors with aftermarket MAFs that are really hard to nail on a mail order tune.

Don

 

[King Cobra 22]

24's USUALLY are OK -as long as it idles and runs OK now, without a chip, you should be OK, and I'd do it - It's the blower cars or cars with radical cams and 42# injectors with aftermarket MAFs that are really hard to nail on a mail order tune.

Don

Yes the car idles and runs fine now.
So you think you guys will be able to do a chip then?

What other things will the chip do for me?
Increase shift firmness right?
Any Hp and TQ increase?

As for a price it says Single Program Chip for $269.
That is how much is will cost me correct?

 

[Don 95Vert]

Yes I think we could help you out. It modifies shift points and converter lockup, we can shut off smog crap, raise rev limiter, remove speed limiters, adjust the spark and fuel tables - essentially anything that the EEC controls, we can modify. On a mostly stock car the performance increase isn't huge - SCT claims 11 RWHP and 17 RWT - modded vehicles usually get a lot more, but it IS something that comes with the chip mainly to fix the shift points.

The single program chip is $269 + shipping but usually with auto trannies and gears we recommend getting a 4 position switch chip - we put four programs on it with different shift points and you can decide which one s you like - if you really like one of them, then I can use it as a base and do a free reburn and add a regular gas, 91 octane, 93 octane and a race gas tune on the chip. They switch cables are just $25 more.

Let me know if you need more info - I hate to spam on the boards so you may want to PM me or email me (see sig)
Thanks!
Don

 

[HISSIN50]

I bet Don can also change the fan turn on/off thresholds to accomodate a 180* stat. That would be pretty nice too (it is on my list of things I would want changed).