guess my HP or 1/4 time

88 TC with stock intercooler:

T3 turbo ~ 18 psi
3" downpipe & that is it (no cat, no muffler)
Ported lower intake
bbk 255 fuel pump
(kirban adjustable FPR soon)

...assuming i already have my kirban, what do you think my car would run? i'm just asking because i wonder if my open exhaust is a big help or not

Uh...I'd guess b/w 220-230 hp. You e/t, if you are a good driver, uh...a 15.0, 14,9? Anyoen else have another opinion?

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1987 Turbocoupe, black, 5-speed, all options besides leather and moonroof, 180K+ and running strong, MOMO shift knob and boot, mustang shifter (easier to reach), K&N cone air filter with cold air induction, dynomax super turbo exhaust, tinted windows, white faced indiglo gauges, sony XPlod and Pioneer speakers, Pioneer CD player, painted the faded red molding lines blue, painted interior parts blue, neon dome light, aftermarket foglights, runs great.

Originally posted by r3lic76:
88 TC with stock intercooler:


3" downpipe & that is it (no cat, no muffler)


i'm just asking because i wonder if my open exhaust is a big help or not

If your goal is to kill your brain cells and permanently damage your hearing, then yes, running just a downpipe is a huge help. Do yourself (and your neighbors) a long-term favor and finish the exhaust off with at least a catalytic converter and some means to rid the exhaust gases from underneath the car. You'll thank yourself 20 years from now.

As for 1/4 mile times, I was running very low 15's at around 89-90mph with nothing more than a k&n and a gillis valve set to 19-20psi on the ihi.

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Estoril blue 1987 TC 5spd, 136k miles
k&n cone in fenderwell, PRofec B electronic boost controller, kirban adjustable fpr set at 44psi base, walbro 255 hi-pressure pump, Stratmosphere Forge 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, Nitto 555R drag radials
Best 1/4 mile (before tuner, turbo, injectors, drag radials): 14.120 (with 1.983 60' time)
Best trap speed: 98.44mph

ok i ran my car with glasspacks and no cat for almost 2 years now, and well i put a cat back on this Friday to pass emissions, and now my car is better for street driving, i have more low end torque and the sound inside is toned down, i used to have to cranked my radio up to about 67 (awia cd playe,r no amp to front speakers) at 80mph, now i can have it at 50 and hear it perfectly fine, a cat is the best thing, i mean i got mine at cost and put it on in 15mins(i work at exhaust shop) so its not a big deal for me, but spend the 200 or so and get it back on there, most aftermarket cat, or universal ones the exhuast shops use are high flow cats compared to OEM ones, and IMO better for the car, and in Jersey it’s a 2,200 dallor fien for nto having a cat on you car,

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Brian J Larkin AKA Turbo
1988 Turbo Coupe 5spd
Twilight Blue
boost valve, k&n cone, no cat(well as of friday 2/28 put on cta to pass emissions and it staying on!) and glasspacks.

Maybe I should put my exhaust back on too...I had a leak where the straight pipe is so I just removed it completely and bolted on a turndown, now its just open downpipe. It so loud it rings your ears and you'll wanna drive with windows open so you don't kill yourself. Other than that, the turbo sounds great! Maybe I should reconsider doing that to save myself from loosing hearing later on in life...

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1988 TurboCoupe - 5 Speed - 115k miles - Fully Loaded except Leather
5"x8" K&N in fenderwell, SVO T3 watercooled .63/.60 A/R, Gillis Valve @ 18 psi, Gutted Upper Intake, Ported/Profiled Lower Intake, Cleaned/Flowmatched Stock Injectors, HKS Super Sequential BOV, Walbro 255 HP Fuel Pump, Kirban AFPR, Bob's Big Log Header, 3" DP, No Cat, Dual 2.5" UltraFlos into ATR SS axle/tailpipes, Centerforce Dual Friction Clutch, Pro 5.0 Shifter, Koni Adjustable Struts, KYB Gas-A-Just Rear Shocks and Quads, Custom Progressive Rate 1" Lowering Springs, M.M. C/C Plates, Energy Suspension Parts Everywhere, PST Ball Joints/Tie Rod Ends, Various Autometer Phantom Gauges