skibum9199

Using a gtech i ran 0-60 in 8.7 sec, and it showed the horsepower at 99 -with the weight input at 2760 lbs.

This is in an 86 na with a bonez high flow cat, and all(i think) engine components working correctly.. How does this sound to u guys?


~Jesse

Agent_D

iTrader: (2)

sounds slow to me.

relvinnian

An 86 n/a base model weighs 2625 stock. You removed 3 cats and replaced it with one lighter one... Stock cats weigh a TON. Make sure you figure it all in there... Of course, that will not make you run a faster 0-60, but it WILL say you have less HP =P

-Brian

Maxthe7man

I have an 87 GX(SE), dynomax catback, homebuilt header and Rb pre-silencer, k&n filter, ans some minor tuning tweaks, I g-teched my car as well as another (Roshambo's GX), and used a similar weight (2700), my Gx has posted a best HP of 88, Roshambo's was 38 hp, after some tuning and getting a straight pipe in place of the cats, he's up somehwere around 76 hp now, the altitude here is close to 4000 feet, not exactly nice dense air for horsepower numbers, I have run the 0-60 and my best is 7.6 seconds in the GX, I can't rememer Roshambo's 0-60, the difference between our cars is the header though, and mine has bigger wheels which is slowing me down a tad. Sometimes I think the G-tech is almost exactly 100hp out of whack, with my mods my GX should be around 170-180, my TII shows 115-120 ont he g=tech, while my truck shows 380hp, but I know for fact its around 480 hp, there are alot of variables that can change between the g-tech installation in different cars, and different runs, like traction, incline of the road, launch and shift points, its a fun gadget, but really quite useless for tuning...Max

skibum9199

And the results are in...
tonight i hit 113 hp on the gtech with a weight of 2700 lbs
This sounds pretty close to what it should be... given that the gtech measures rear wheel horses, not flywheel... correct for 33% drivetrain losses and you get 169 horses... i was gonna do 30%, but the math was over my head Also, it was kinda chilly tonight, good air for racing... I agree with max though, it isnt entirely accurate.. much of it is based on shifting, launching, the road... the list goes on. I found that for max hp, it was better not to launch, but to just let out the clutch normally, then mash the gas Whats an 86 na supposed to run 0-60?


~Jesse

PaulC

actually correction is 18% for an auto and 15% for a stick if you read the instructions for the gTech

and you should do the AFT treatment to your engine and make sure your 5&6th ports are opening.

All Ive done is strip weight, exhaust, zip tie my ports open, and the ATF thing. But almost 700lbs of crap really adds up

skibum9199

oops, teehee, no i didnt really bother with those, uh what did you call them? Oh yeah, instructions... Actually i was going off what my mechanic told me... my bad hehehe



~Jesse

kliftin

I put a video in my car a few weeks ago and noticed I launched right at 7.sec and hit 60 exactly at 14.sec. It was at night and car was running perfect. Yup thats 7 seconds with just a race pipe and filter. cb. Its a 89 GXL lug to. I think it was more like 7.2 sec but I launched like at 6k and didnt spin tires much. I have yokos. Anyways Now I took out air pump , ps, and sleeves / actuators and will try it agian when I fix that dam intake leak. I striped the bolts off the acv.