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post #1 of 31 Old 06-28-2010, 10:57 AM Thread Starter
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New TW Chip

Installed a 6 position TW chip last week on my buddy's truck we got from Raul at Stealth-Automotive. He got Economy, Daily, Street, Smoke, Heavy Tow, & Extreme. Truck was bought stock a year ago & the diesel bug bit him thanks to hanging out with me lol. It's a 2002 F-250 extended cab short box, purchased with 100,000miles. Had it lifted 6" & on 35's. Mod's are dual 6" mitre cut stacks, S&B intake, autometers & recently the TW chip with a pressure relief valve. The tunes definitely make some power & put the stacks to use, but the trans is shifting so hard & slips pretty bad. Feels like it has a HUGE stall converter in it. The trans wasn't having any issues before the chip what so ever. Economy & daily seem to shift great, firm & quick. But street, smoke, & extreme slip off the line & in-between gears when driving normal. When it does shift it slams into the next gear, but seems shift decent when I mash the go pedal. Does anybody else have these trans problems with the TW tunes? Also seeing a DTC at high RPM's in the street/extreme tunes, I'm guessing for low high pressure oil due to a weak HPOP, it'll go off after a couple of minutes or when I turn the truck off.

Sorry for the long post, any pointers would be great I haven't spent a lot of time working on the 7.3L
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post #2 of 31 Old 06-28-2010, 11:41 AM
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If you're trans is stock, running high HP tunes is why it's slamming into gear.

Back to the blue oval: 08 F350 FX4 CCLB - DPF/EGR delete - Spartan tuner - S&B CAI - 4 in DP to 5 in SP

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post #3 of 31 Old 06-28-2010, 11:51 AM Thread Starter
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Would a JW or BTS valve body cure this problem with a re-burn on the chip? Or if you could point me to a thread your aware of I'd also appreciate it so I'm not beating an old topic to death, I've searched a few hours before posting & didn't find the right info.
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post #4 of 31 Old 06-28-2010, 12:03 PM
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Quote:
Originally Posted by gomerpyle View Post
Installed a 6 position TW chip last week on my buddy's truck we got from Raul at Stealth-Automotive. He got Economy, Daily, Street, Smoke, Heavy Tow, & Extreme. Truck was bought stock a year ago & the diesel bug bit him thanks to hanging out with me lol. It's a 2002 F-250 extended cab short box, purchased with 100,000miles. Had it lifted 6" & on 35's. Mod's are dual 6" mitre cut stacks, S&B intake, autometers & recently the TW chip with a pressure relief valve. The tunes definitely make some power & put the stacks to use, but the trans is shifting so hard & slips pretty bad. Feels like it has a HUGE stall converter in it. The trans wasn't having any issues before the chip what so ever. Economy & daily seem to shift great, firm & quick. But street, smoke, & extreme slip off the line & in-between gears when driving normal. When it does shift it slams into the next gear, but seems shift decent when I mash the go pedal. Does anybody else have these trans problems with the TW tunes? Also seeing a DTC at high RPM's in the street/extreme tunes, I'm guessing for low high pressure oil due to a weak HPOP, it'll go off after a couple of minutes or when I turn the truck off.

Sorry for the long post, any pointers would be great I haven't spent a lot of time working on the 7.3L
I am having the same problem with the slamming of gears and need some answers as well. No one knows what it is...
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post #5 of 31 Old 06-28-2010, 12:22 PM Thread Starter
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I just got off the phone with Brian @ BTS. He said that a valve body should fix the problem. Give him a call, 1-870-422-3673. I'm just not sure if the chip will need re-burned or not after a valve body. Brian said it all depends on what tunes are currently loaded into the chip, so hopefully I'll hear something back from Tony or Raul today about it. I'm going to need a re-burn anyway after the adrenaline gets installed.
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post #6 of 31 Old 06-28-2010, 12:34 PM
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Finally, someone with some answers lol...Ill do some more searching
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post #7 of 31 Old 06-28-2010, 12:36 PM
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Valve body and shift kit should solve the problem, but if you run in smoke or extreme a lot, you should get an upgraded torque converter as well.

Back to the blue oval: 08 F350 FX4 CCLB - DPF/EGR delete - Spartan tuner - S&B CAI - 4 in DP to 5 in SP

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post #8 of 31 Old 01-08-2011, 01:56 PM
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I know this post is from forever ago, but im having the same problem with my tunes as well, just from 2nd to 3rd shifting, it revs out and slams like the drivetrain is gonna break off the truck. Doesnt do it in tow tunes though, any ideas?


2000 DRW CC 7.3
Exterior: 08 Exterior Clone, 22.5's
Engine Mods: GTP38R WW2, 5 inch exhaust,T500, 6637, TW tunes,DI Up pipes, 6.7 fuel pump fuel system.
Trans Mods: 6.0 trans cooler, JW Valve body,Billet triple disc converter.
Sound Mods: 7" flip out tv, 3-way speakers all around, 12" sub, 500 watt amp.
Misc:dieselsite coolant filter, max ac assist, BRV, IHD,gauges, CCV

Next up power rear window
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post #9 of 31 Old 01-08-2011, 02:04 PM
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I had some issues. Just get back with tony if you can and go from there.

But a vb will fix a lot of things? hmmmmm

2006 Ford F250 CCSB FX4 6.0




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1999 F350 CCLB 4WD 7.3
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post #10 of 31 Old 01-08-2011, 02:12 PM
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a bts VB will trow you back in the seat if the rest of the trans is fine. but you may need a tc. a 6.0 tc would work great.

95 reg cab 4X4 STROKER < trade for 5 speed???
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screw all this I just want a 6.4!!!!!!!!!!!!!!
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