North American Turbocoupe Organization



More Horsepower
TurboBays Offline
Member
#1
I know that the auto transmission computers where de-tuned 50hp. Is there any way of turning the computer in my 87tc 5-speed up??
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Pete D Offline
Administrator
#2
You could get an EEC Tuner that allows you to adjust parameters in the stock computer. what kind of mods have you done to your car? An EEC tuner can be very helpful but it is may not the place to start.

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NATO Member. it's not a vice, it's an obsession
"The nice thing about each new day is nobody ever used it before" Barnaby Jones
88 TC X 2, 86 SVO, mods list at
http://www.turbotbird.com/showroom/pd_88tc.htm
Pete Dunham


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SteveX82 Offline
Posting Freak
#3
Hold off on the EEC-Tuner thought for awhile.....it seems that the LA3 computer (the EEC Tuner doesn't even support the LA2's that come on the 87 TC's) might have an adaptive learning function that essentially negates any changes you make to the fuel curve over time. This can create a bit of a problem when running more boost than the stock fuel map is set up for.

I'm just about to upload a new program to my tuner and see how long thing stay rich under boost, so I'll keep you all updated.

P.S. - If it turns out that the computer does, in fact, purposely try to make things run lean despite the EEC Tuner, I'll probably be putting the TC up for sale. [Image: frown.gif]

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Estoril blue 1987 TC 5spd, 136k miles
k&n cone in fenderwell, gillis valve set at 20, kirban adjustable fpr set at 44psi base, walbro 255 hi-pressure pump, bosch hi-pressure bypass valve, ported e6, volvo front mount intercooler, t3/t4 50 trim / stage III .63, full 3" exhaust, eec-tuner, 55pph injectors, dave compton a/f meter
Best 1/4 mile (before tuner, turbo, injectors): 14.120 (with 1.983 60' time)
Best trap speed: 98.44mph
Estoril blue 1987 TC 5spd, 148k mi, a237, Bailey BOV, spec stg3 clutch, spearco FMIC, 50 trim t3/t4, 3" exhaust, Bamafuel, LM1, 55pph
Best 1/4 mile: 12.31 @ 110mph on 25psi
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Dan E Offline
Posting Freak
#4
But he doesn't have a LA2...it's an automatic. I wonder if the EEC Tuner works on the auto computer ?

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Dan Eaves
88TC 5spd, Crower 5.5" Sportsman Rods, Short Wiseco Pistons bored .030" Over, Ported Head with Polished Combustion Chambers, Gutted & Polished Upper, Ported & Polished Lower, Polished T/B, Ported E6, SVO T3 .63AR Turbo, Bosch Bypass Valve, 3" DP w/No Cat, 2 1/2" DynoMax single cat back w/DynoMax Super Turbo Muffler, RR Cam, K&N in Fenderwell, Gillis Boost Valve, Centerforce I Clutch, Removed A/C, Polished Wheels, Polished Valve Cover, Polished Crank and W/P Pulleys, Walbro 255LPH HP Pump, Kirban Adj FPR, and the DAMN Heater Core is new too !

http://www.geocities.com/wot_turbo/WOT.html

NATO MEMBER (Vice Chairman...if it's a vice...I deal with it)
Dan Eaves
88TC 5spd Vermillion Red, Polished...everything...
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SteveX82 Offline
Posting Freak
#5
Quote:Originally posted by Dan E:
But he doesn't have a LA2...it's an automatic. I wonder if the EEC Tuner works on the auto computer ?


Good eye, Dan (no pun intended [Image: smile.gif]).

TurboBays - do you know if you have an 8ua or an LB3 computer? Luckily for you, it looks like there are .bin and .rdt files to support tuning with either computer. Of course, the same adaptive control "problems" may be present in those computers as well. If you're still considering the EEC-Tuner, check out http://groups.yahoo.com/groups/tuner23 for more information.
Estoril blue 1987 TC 5spd, 148k mi, a237, Bailey BOV, spec stg3 clutch, spearco FMIC, 50 trim t3/t4, 3" exhaust, Bamafuel, LM1, 55pph
Best 1/4 mile: 12.31 @ 110mph on 25psi
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Liquid_force Offline
Senior Member
#6
Don't know if this is of any value or not, but I put a manual in my car and left the auto computer. With my mods (K&N on vam, BCV, gutted cat) I'm not having any fuel problems, and seem to be getting all the hp I could ask for.

[This message has been edited by Liquid_force (edited 02-06-2003).]
88 TC -- Dark Blue 283k
RIP - 9/22/07
She was a great TC and went down swinging Smile
Now -- Me: A minivan, I'll spare you the details.
Her: '09 VW Tiguan AWD 2.0T 101k
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Glenn 88TC Offline
Posting Freak
#7
Quote:Originally posted by SteveX82:
Hold off on the EEC-Tuner thought for awhile.....it seems that the LA3 computer (the EEC Tuner doesn't even support the LA2's that come on the 87 TC's) might have an adaptive learning function that essentially negates any changes you make to the fuel curve over time. This can create a bit of a problem when running more boost than the stock fuel map is set up for.

I'm just about to upload a new program to my tuner and see how long thing stay rich under boost, so I'll keep you all updated.

P.S. - If it turns out that the computer does, in fact, purposely try to make things run lean despite the EEC Tuner, I'll probably be putting the TC up for sale. [Image: frown.gif]


Something has to be wrong. I've never heard of that before. With all the tuners out there you think that would have been brought up. Keep me posted and I really hope this works out for you.



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Glenn 88TC
current mods: ported & polished big valve head(1.89/1.59), ranger roller, custom upper and ported lower intakes, t3/t4 turbo, powerstroke intercooler mounted full size, 60mm throttle body, R.C. Engineering 42lb. injectors, MSD 6al, MSD Launch Control, MSD 8.5mm wires, K&N filter, Walboro 255HP pump, Kirban adj. fuel reg., ATR header, full 3" exhaust with Dynomax Ultraflow muffler, Star stage III clutch, Hallman boost controller, Flex-a-lite adj. temp switch for stock fans, Weld Draglites with M/T ET Street 26x11.5/15
NO TC and NO headaches.
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rich Offline
Member
#8
I have an 88 stang/88 turbo engine and LB3 with a gillis valve set on 15psi with a 93 A4LD. No probs. Oh, front mount volvo IC too.

[This message has been edited by rich (edited 02-09-2003).]
2.3L Turbo in 88 stang, browntops, 93 a4ld, volvo ic, broncoII rad, gillis valve set @15, k&n af.
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