North American Turbocoupe Organization



what perfromance upgrades next
Ricky03 Offline
Senior Member
#1
I have about 2k to spend on upgrades for my TC and don't know which way to go. I'm torn between a BO-Port head, Megasquirt engine management, or NO2. I have no experience in turning EFI computer systems so I'm not sure if the Megasquirt is over my head or not, even the one from Turbo-Dad on TF. I want to get about 350 HP out of my set up.

Please give me any suggestions.

Thanks,Ricky
88TC :5 speed swap,255 walbo fuel pump, 3" down pipe with 2 1/2"duals, Ported upper and lower intake, ported E-6, Kiben adjustable fuel pressure regulator,T-3 turbo,Forge BPV,Steeda Tri-x shifter,Autometer gauges,Racer Walsh stage #2 cam, Spec stage 3 clutch,Stinger FMIC
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gadgetolds Offline
Posting Freak
#2
Im no expert but I think your biggest gain out of the 3 would be the head. Assuming its basicly stock, and with everything else opened up in that system its the only restriction, along with maybe a 3" turbo elbow.
1988 Turbo Coupe - A237 cam, K&N Cone, T3(.60-.63), 255 Walbro, Gillis BV, gutted and knifed intakes, ported e6, 3" elbow/dp to dual 2.5s, Kirban and spearco fmic.

Up next, ported head, t3/t4 upgrade.
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Pete D3 Offline
Junior Member
#3
The head would probably be your biggest bang.
You have a T3 now. That and the stock injectors are going to peak out in the same HP range of 280 to 300. After that you are going to have to get a bigger turbo to get more HP and bigger injectors to feed it. That is when you will need an aftermarket management system. By then you would want the head ported anyhow, so do it early and enjoy it.
x
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Tom Senior Offline
Banned
#4
Call BO and have him build you a head. The HP is in the head and valve train. BO heads are awsum.
He will install seats that will prevent cracks and larger valves. His heads are not cheap but worth every penny. I dynowed one and the HP gain was tremendous over a stock head. Like night and day. Tom Senior. Smile
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xcrunnerbd Offline
Posting Freak
#5
Another vote for the head, also stage 3 hybrid t3/t4 50 trim turbo, bob's log, 3" elbow, alky injection...
Project 13 sec. / 30mpg in '88 TC 5Speed : [email protected] / 32+ mpg

On The Car: KN cone, 2-stage [email protected] 15psi wired to fuel switch, Kirban AFPR @ 39psi, Walbro 255 HP FP, 130A 3G Alt., Full 3" Stinger Exhaust incl. cat. no muffler,

Shelf: .48 T3, ported E6, BPV
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86XR7auto Offline
Moderator
#6
The power is in the head....which applies with all engines. You can boost the heck out of it. Some people do that. And deal with all the problems lots of boost causes.

But a nice head will help you make more power at your currently level....but you are almost out of fuel now. A nice head is just going to make that worse. So after the nice head mod...you are going to have to learn about the more fuel.

Good luck,

Travis
86XR7 in pieces...old time [email protected] http://www.youtube.com/watch?v=kGsz7PdEqTI 88TC stock Red RHSC [email protected], 01 Z71=Nice winter ride, 01 CVLX w/HPP wifes ride!
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boosted85 Offline
Senior Member
#7
how much do these heads go for? or is there a website that tells u
Complete custom downpipe to tail pipe 3in exhaust, ranger cam, cran double valve springs, stock dsm bov switchin out for a good aftermarket, cone filter, fmi 2.5in piping, walbro 342hp, aeromotive fpr, fuel pressure 45 base, 17in cobra R's, steel braided oil feed line, 96lb injectors, megasquirt 1 v2.2, msd blaster 2 coil 86 t3 48, innovative lc1 wideband,
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Pete D Offline
Administrator
#8
I don't know if prices are posted but start here:
http://www.bo-port.com/
Pete Dunham


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Ricky03 Offline
Senior Member
#9
thanks guys, was leaning towards the head anyway. I noticed no said anything about NO2. Anyone using it on a mostly stock motor with good results?
88TC :5 speed swap,255 walbo fuel pump, 3" down pipe with 2 1/2"duals, Ported upper and lower intake, ported E-6, Kiben adjustable fuel pressure regulator,T-3 turbo,Forge BPV,Steeda Tri-x shifter,Autometer gauges,Racer Walsh stage #2 cam, Spec stage 3 clutch,Stinger FMIC
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xcrunnerbd Offline
Posting Freak
#10
There are a few using it, but not very many. Hopefully someone who is will chime in... have you tried searching on turboford? About all I know is that a "wet" system is the one to run and just enough to get the car going until the turbo takes over.

Alky injection can help a bit with fuel but Travis is right. Perhaps you should look into MS or something to allow larger injectors. Do you have a Wideband? Perhaps this is the time for one.
Project 13 sec. / 30mpg in '88 TC 5Speed : [email protected] / 32+ mpg

On The Car: KN cone, 2-stage [email protected] 15psi wired to fuel switch, Kirban AFPR @ 39psi, Walbro 255 HP FP, 130A 3G Alt., Full 3" Stinger Exhaust incl. cat. no muffler,

Shelf: .48 T3, ported E6, BPV
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