A couple days ago i heard that my local track was having a $10 "nickel and dime" on Friday, normally it costs $25. I got with Protomec, who tunes my car so we can fix the timing advance problem over 106mph and we decided to change a couple other things as well real quick the night before. Shifting from 1st to 2nd will stay at 7,000 rpm like it was before but shifting from 2nd to 3rd as well as 3rd to 4th is now be at 7,600 rpm! Doing this allows me to stay in 3rd gear to 116 mph and should really help my ET assuming i don't go over it and into 4th gear. I didn't even have a chance to test the new rev limit on the street, the first time hitting 7,600 rpm was on the track.
I am pretty disappointed with the results. Being that we raised the rev limit and shift points up 600 rpm from before and did no other tuning it was getting a little lean above 7,000 rpm so I had to drop the boost pressure back down to 7.5 psi to be safe. It was a little warmer than I was hoping for, about 85 degrees, and before each pass I had sit in the staging lanes for almost 30 minutes waiting which made the motor and trans run very very hot and unhappy. The trans was starting to slip pretty badly, 1st gear felt like it was spinning the tires off the line even though it wasn't. I’m pretty sure its on its last leg, time for a new tranny. My best of 4 runs was a disappointing 13.1 @ 108.47 mph, I was really expecting much better.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
great times IMO but maybe not if you already ran that on 8 psi but does a 1/2 lb. of boost make a big difference?And can you run a trans cooler?fan override mod to help keep it even cooler?
15.2@89mph 2.171 60ft. 9.830 1/8 R.I.P. "LULU"
the staging lanes were moving that slow
even when it rained i didnt have to wait a half hour.
Either way time to swap the auto for a 5 spd
13.1 outta an automatic with a mere 7.5 psi and your DISAPPOINTED?! i dont see why... man thats a great freakn time! i realize your expecting more and such... but damn man, i think thats pretty impressive if you ask me. were these runs made with your rims?? full interior???
what did your 60's look like?
Skilz10179 wrote:Being that we raised the rev limit and shift points up 600 rpm from before and did no other tuning it was getting a little lean above 7,000 rpm so I had to drop the boost pressure back down to 7.5 psi to be safe. It was a little warmer than I was hoping for, about 85 degrees, and before each pass I had sit in the staging lanes for almost 30 minutes waiting which made the motor and trans run very very hot and unhappy. The trans was starting to slip pretty badly, 1st gear felt like it was spinning the tires off the line even though it wasn't. I’m pretty sure its on its last leg, time for a new tranny. My best of 4 runs was a disappointing 13.1 @ 108.47 mph, I was really expecting much better.
so you had lean problems. ... and runnign only 7.5 psi.... and having a slipping trans... you still run low 13s at 108.
thats damn good man.
just wondering, what do u plan on doin for a trans next? im assuming your still staying with an auto?
http://www.myspace.com/15102113
12.5@116 2.0 60ft 19psi
disappointed with a 13.1...psht. that sucks about the tranny tho.
I'm disappointed because the changes that were made should have made a pretty big impact for the better but due to the conditions and the way the trans was acting i ran slower than my last time at the track.
The setting on HPT was dropping ignition timing after 106 mph last time i went to the track and i was still trapping over 110. I no clue how much power this was causing me to lose but it could have been as much as 50hp for the last couple hundred feet of the track where i really needed it.
Raising the rpm range should have also helped a good deal considering last time at the track i was shifting at 7k where the motor was still making power as i discovered on the dyno. Revving out higher should have made have made the rpm drop after each shift keep me in a higher powered rpm range as well as maybe even produce more power over 7k.
Also, last time out i was crossing the traps right after shifting into 4th gear which i know had to of hurt my times. Now with the higher rpm range i can stay in 3rd to a much higher speed without shifting into over drive before the finish line.
Considering those three thing it should be pretty easy to see why i'm not happy with the results.
John H [CavalierKid wrote:]
so you had lean problems. ... and runnign only 7.5 psi.... and having a slipping trans... you still run low 13s at 108.
thats damn good man.
just wondering, what do u plan on doin for a trans next? im assuming your still staying with an auto?
Not really sure what my next plans are. I'm not sure if it is the amount of power i am making that is making my trans act the way it is or the fact that i've been beating the living @!#$ out of it with nitrous and boost for the last 6 years. I'll probably end up just finding a nice low mileage trans and seeing how it works compared to my old beat up one.
z yaaaa wrote:13.1 outta an automatic with a mere 7.5 psi and your DISAPPOINTED?! i dont see why... man thats a great freakn time! i realize your expecting more and such... but damn man, i think thats pretty impressive if you ask me. were these runs made with your rims?? full interior???
what did your 60's look like?
I ran it in full street trim, 17"s, street tires and full interior minus the rear seat, i haven't had a back seat in years so this is as full as it gets for my car, lol. The 60" was 2.16, not really bad but not that great either.
Thanks for the kind words guys.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
13.1??
Come back and make a post when you are in the mid 12's!!!
J/P Bud. Sounds like you have it figured out. Now just tinker with it till its right. And stop racing when its 85 out!
Go Go OG Traction!!
i understand that your upsent that u didnt pull better times, but man look at all the things that happened.
6 year old tranny with a hard life is going out
lean a/f problems
7.5 psi ( you know thats not @!#$ for boost, specially with a built motor)
hot air
taking for ever staging.
and u run what, like 1 or 2 TENTHS slower?? that alone should tell you that your car will be in the 12s.
im curious, i looked at your modlist in your reg.. why are u only running 7.5 psi? assuming your tranny problem is resolved. you should be safe for 400 hp or more.
2.1 60ft with an auto on 17"s with street tires isnt bad either.
all that going wrong and your running times on 7.5 psi what it takes most people inlucding myself to run almost double that boost level on a setup without problems.
im just saying, you really dont have anything to be upset about besides having to fork out cash for a tranny
either eay, keep us updated man
http://www.myspace.com/15102113
12.5@116 2.0 60ft 19psi
Seems like some pretty stout times to me, with lots of room to improve when you get those issues sorted out. Why don't you use HPtuners to change the fan settings, and keep the enginebay cool during staging? Have it turn on at 95 and off at 92 or something?
15.3 @ 89.97mph - '01 SFGT
'98 Acura 1.6EL Sport 5M Y7/Y8 mini me
it just goes to show that sometimes tuning can't make up poor conditions. sucks to hear it man
but look at it this way, a BAD day at the track and you run the equivelent of your best time from before.. so there's hope when conditions are right
Its funny, when the trans is really hot is seems to slip badly but when it cool and nice and cool outside it seems fine. Saturday and Sunday were in the 60's and the car was a beast. If we have cool weather next week i'll go back and try for 12's again.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
TWC calls for a 62 degree high on Sunday...
Hey do you have any sort of trans cooler other than the factory one? I would invest in a better cooler if not and just flush out your trans. I'm sure your tranny will be fine, it just seems like it's getting a tad bit to warm. I'm jealous of your power though!
2009 Ford Mustang V6
hey skils... your messing with your tranny shift points and rev limiter etc..
maybe you can help me... i had shifted tune my car and for some reason the new shift points and rev limiter arent working together, my car bounces the rev limiter before it shifts, and it WILL NOT shift until u back out of it...
do you think if i just raise the rev limter from the 6700 its at now, to 7000 it would shift?
also, how much time does it actually take the tranny to shift, too me it seems like the shift point is either to high, or the rev limit is to low, either way its needs tweaked.
thanks.
When raising the auto's rpm shift points you must also match it to the vehicle speed shift points, if they aren't matched right it can result in the symptons you are having.
Also if the trans is slipping really bad it will hit the rev limiter before the shift point. In my car while we had the 1st gear shift point at 7,000 it would always hit the rev limiter set at 7,200 due to super fast rev ups (tire spin). Also, that last time out at the track the rev limiter was set at 7,600 but first gear was set to shift at 7,000, due to how bad the trans was slipping i hit the rev limit in 1st gear on one run.
The time it takes the trans to shift can also be altered with HPT, no clue what shifted did or didn't do on your tune.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
well, it has slipped on me recently a few times, nothing really bad, well.. i guess ANY slippage is bad, but i mean it slips every once n awhile and for maybe 1-2 seconds max.
do you think a trannt flush/fluid/filter change would kill the slipage? it has 96,000 miles on it, shifts nice n strong otherwise.
also, i havnt even tried my autotrans interceptor yet, you think maybe bumpin the line pressure after the flush it might shift?
heres a link to the things he did to the tranny:
http://www.j-body.org/forums/read.php?f=41&i=32832&t=32832
Skilz, I'm impressed.
You may not be, but I am.
It's so nice to see someone take a Cavalier, do something with it, take it to the track, and post some good times.
It's also nice to see the 4t40e take such abuse and still survive after all the years of heavy work.
Once again, you've raised the standards of what a Cavalier should be and an inspiration to all that are trying to raise their own standards.
Keep us up to date with your car and your progress.
Misnblu.com
Newbie member since 1999
Thank you Dave and JBO! 
