89-90 na rx-7 dyno numbers?
THE Mazdabator
Joined: Dec 2005
Posts: 597
Likes: 0
From: NY
i finally got my s5 on the road (kinda) and drove it around, damn... this thing is MAD slow compared to my carbureted s5 i had a while back... i know my 5 and 6 port works, i dont know if vdi works, and i have idle issues. but i kinda expected more, since the rest of the car is in very very good shape.. while the other car only had a good carb and motor, exhaust is crap... most of the car is crappy... but it is very light since everything was stripped... *sigh* idk.
i was hoping the s5 felt a bit faster n/a... guess i gotta install my afc soon to get that little bit more haha.
i probably gotta break in the clutch too, but it felt like it grabed perfect off the box, so i was seeing if it can grab at 3000+rpm twice... and it did, but aside from that im just gonna granny the thing every couple of days.
oh ****.... i just realize.. maybe my car is slow cos of the 3.9 rear end... LOL... hm...
i was hoping the s5 felt a bit faster n/a... guess i gotta install my afc soon to get that little bit more haha.
i probably gotta break in the clutch too, but it felt like it grabed perfect off the box, so i was seeing if it can grab at 3000+rpm twice... and it did, but aside from that im just gonna granny the thing every couple of days.
oh ****.... i just realize.. maybe my car is slow cos of the 3.9 rear end... LOL... hm...
Last edited by Mechanic; Oct 7, 2007 at 10:21 PM.
these numbers are close to what i would expect, but i think the S5 were tuned more conservatively, so the power difference isnt as much as you think. my brothers newly rebuilt S5 n/a streeport/intake/2.5"exhaust only put down 130whp
I "lost" my emissions....
Joined: Apr 2005
Posts: 1,764
Likes: 6
From: lillington, nc
im running a s5 motor on s4 ecu with a safc to correct.
no emmissions 2 1/2 ecept for stock y
open filter in the engine bay
5/6 pi removed
wired vdi
cut spark plug washers w/ 8 mm wires
theres a few other little things i cant remember
but i laid down 165 rwhp on stock ports with my timing mildly off
stock s5's ive seen play in the 115-125 range
no emmissions 2 1/2 ecept for stock y
open filter in the engine bay
5/6 pi removed
wired vdi
cut spark plug washers w/ 8 mm wires
theres a few other little things i cant remember
but i laid down 165 rwhp on stock ports with my timing mildly off
stock s5's ive seen play in the 115-125 range
Joined: Mar 2001
Posts: 31,857
Likes: 3,243
From: https://www2.mazda.com/en/100th/
here are a couple of REAL numbers from REAL cars.
stock 87 gxl: it did 116rwhp. car is stone stock, 180k+ miles, cat is in good shape...
gtus kevins car: i think it did 142rwhp, this is an s5 with no cats, and an intake
todds car: again s5, headers and catback, 140rwhp. this one was high miles
our ITS/PS1 car: s5, header, haltech, 175rwhp....
conclusions: an S4 car, thats stock, should be running 110-120rwhp, removing the cat should get you 10-15hp, i dunno about safc+timing, havent tried it
S5 car, stock 120-130, taking the cat out, gets you 140-142, safc+ tuning might get you another 5-10 depending
stock 87 gxl: it did 116rwhp. car is stone stock, 180k+ miles, cat is in good shape...
gtus kevins car: i think it did 142rwhp, this is an s5 with no cats, and an intake
todds car: again s5, headers and catback, 140rwhp. this one was high miles
our ITS/PS1 car: s5, header, haltech, 175rwhp....
conclusions: an S4 car, thats stock, should be running 110-120rwhp, removing the cat should get you 10-15hp, i dunno about safc+timing, havent tried it
S5 car, stock 120-130, taking the cat out, gets you 140-142, safc+ tuning might get you another 5-10 depending
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