altron32

went and did some dyno runs on my car, got 116whp and 87wtq not bad for mostly stock. heres a link to street fire of a vid my buddy made.http://videos.streetfire.net/search/1988%20rx7/0.htm

rotorhead_izzy

iTrader: (36)

cool little video. i like how the car sounds

rotary downshift

how many km on the engine?

rolandofeld

fully...sounds good, what exhaust? what mods actually?

altron32

its got 170k on the tiker. the exhaust is a custom 3inch single with a moroso spiral flow and a dyna tech race muffler, with no cats, its so god dam lowed on the street! mods are, custom cold air box, ported intake manifold, NO emmissons what so ever I.E. no smog pump, cats, egr, 5/6th ports or air control valve, no choke plate on TB, no a/c. and i think that about does it for power mods. the motor alone has about 50k on it, the guy i bought the car off of last year put a new/used motor in it, dont wanna know why!

arghx

iTrader: (3)

i dunno man, that seems low to me. 3 inch exhaust is too big... I know guys putting down in the 140's with similar mods. Is compression ok? You should be doing 115-120 stock.

Dom_C

that's low man, something must be up

Sideways7

iTrader: (7)

Considering the rebuild prob didn't use new housings, I think thats pretty good numbers.

arghx

iTrader: (3)

^ I disagree. That would be pretty good numbers if he were bone stock...

Sideways7

iTrader: (7)

Yeah, I didn't notice everything he had done. That is kinda low considering the CAI and ported manifolds, etc. Still, though, if its on hold housings its not too suprising.

Juiceh

iTrader: (4)

Wow, for that mod list you put out no power...





No 5/6 ports? Wired open? You got an S4 engine right? With no smog pump how are they opening if they aren't wired open? That may be your porblem.

bkg

If you wire open your 5th and 6th port will it cause any problems other than a little less low end torque?

altron32

the 5/6th ports are wired open, i did loose a little low end torque but it was worth it. the dyno i ran on was a Mustang dyno, they read realy low.

rotatech

mostly stock thats your horse power 21/2 piping maybe a little better but stay like that

bkg

woohoo I'm removing the 5th and 6th completely and contouring the ports so they'll always be open.

rotatech

thats fucked up leave the guy alone bro lol

altron32

i guess i didnt make my self clear about the 5th/6th ports and porting the intake. i have the slides still in there there just wired open, the porting on the intake is vary miner, i just smoothed out the surfases between each intake peace.

RotaryEvolution

iTrader: (30)

3" is a bit of overkill on the exhaust but for the numbers they seem average for an n/a on a mustang dyno- they read lower than most other dynos out there.

RotaMan99

Words can't tell me that a custom cold air box is actually functioning the way it should. Pictures are needed.

THose numbers a REALLY low. Get your self a SAFC and start tuning. Also while you do that or even before, tune your timing. Without an SAFC you may be running pretty rich. You could advance your timing to help burn the Air and fuel better. Also swap on a S5 intake manifold and you will gain 10+ hp and get another 1500 rpms.

RotaMan99

Why should they be any different?

jgrewe

iTrader: (1)

Every style of dyno has its quirks. To many reasons to list and some of them get pretty technical. When you try to compare hp #'s from different dynos all you will get is arguements. Just always use the same dyno when you want to see if mods have made a difference.

RotaryEvolution

iTrader: (30)

ever actually been to a dyno before?

you can visit every shop in your area that has a dyno and i can almost gaurantee you will see at least a 5WHP difference between each. Mustang dynos are often known to be the harshest on the numbers.

johnrxt2

i have seen them be off as 5-10 % compared to a dynojet

RotaMan99

Didn't know there was that much of a variation. Figured they all did the same math.

altron32

my buddy that went with me has a 06' wrx with helix turbo back and cobb stage2, pulled 200whp and 248wtq. from what hes seen thats low for what he has since he was on that perticular dyno. people have ran there cars on the mustang dyno and then gone to other types of dynos in the seattle area, and seen a 20-30whp difference.