Shift Rpms' Dropping Too Low After New Tep Trans. Install

[stosh1]

Hey guys, noob here, just looking for a little help... Just like the title says, I just recently installed a rebuilt trans. from Dave@TEP (great guy, luv the trans.), and the only issue I'm having is that after installing the trans. (no other changes) my car slowed down at the tack by a couple of tenths/mph. I lost all of my ET/mph in the first 1/8 mi. (60's are the same), and I noticed that after my 1st-2nd shift the rpms seemed to drop really low and it felt like I was towing a house. Any ideas???

[murphinator]

I would start by asking Dave at triple edge performance (TEP) himself , not only does he know how to build a trans , he knows how to tune also

was there a change in gearing or diff with the new trans ?

[stosh1]

I would start by asking Dave at triple edge performance (TEP) himself , not only does he know how to build a trans , he knows how to tune also

was there a change in gearing or diff with the new trans ?

No, no change in gearing, and I've spoken w/Dave and he wants me to scan for a few things...but it will take some time as I'm waiting on a buddy who has an HPTuner. Just thought I'd ask ahead of time to maybe get some thoughts/input or possibly hear from someone who had a similar problem/fix.

[stosh1]

Well, I scanned the car, and from what I've been told all of the info. appears to be normal. We upped the shift points from 5,900rpm to 6,100rpm (car shifts@6,200rpm--actual), and the rpms now drop to 3,900 going into 2nd gear. However, I'm not entirely comfortable shifting my car that high, and I still feel that much of a drop is a bit excessive. I've seen other scans where guys are shifting @5,900 rpm (actual) and the rpms are only dropping down to 4,200rpm. Are there any settings that I can change to help out the situation, or perhaps, is the torque converter just a little on the 'tight' side??? Any suggestions/advice would be greatly appreciated!!

[stosh1]

Hey guys, wonder if someone wouldn't mind taking a look at this scan below??? (I can post up my bin file if that would help as well.) I would really like to figure out if it's a matter of tuning what I have, or do I need to swap out my converter for something a tad looser.

1st WOT Run: Frame 1845/Time 46:06.2
1st PT Run: Frame 2832/Time 47:44.9
2nd WOT Run: Frame 4359/Time 50:17.7

All the rest of the data is just me cruising around, and please disregard the KR as I was just experimenting w/plug gap...I normally have none. TIA!!

http://www.scandepot.net/viewscan.php?pk=4926

[LSChris]

Was a new torque converter installed with the new trans? If so, it's possible that it's tighter than the old one and you might want to go with something a bit looser.

[stosh1]

Yea, Dave recommended that I just go w/an OEM replacement converter so that's what I did, but now I think I'm starting to regret it...maybe I just got an especially tight one. Wish I had luck like that w/women-LOL!! Did you get a chance to look at my scan??? I've been in contact w/Dave, but he has yet to comment on my scan, and I told him if everything looks ok w/the programming and it's a mechanical thing...then I'll just go ahead and pull the trans. again and replace the converter. Is there nothing in the programming that allows for this condition???

[Black00TA]

My TEP trans did the same thing, did he tune it for you or are you running a previous trans tune from your other transmission?

I had to back off the line pressure and and shift rpm to keep it happy, what eventually happen was it tore up the engine/trans mounts - make sure that shit is solid!
i got 38k out of my transmission from dave.

are you getting any associated KR or low timing numbers around that point?