1.6L @7psi, 215 hp & 203 tq
#1
1.6L @7psi, 215 hp & 203 tq
I recently had my 92 1.6L (refreshed, but stock internals) tuned and dyno'd. My base tune was extremely rich, pulled nearly 5% from each bin from the VE table. Anyways,
Garrett T25 (SR20DET)
Flyin' Miata manifold
Begi 2.25" downpipe
2.5" Magnaflow exhaust, no cat
Intercooled (18x11x3)
460cc RX-7's
steady 7psi boost (small 8psi spikes)
DIYPNP (MS2)
VTPS
No MAF
How'd I do?
Garrett T25 (SR20DET)
Flyin' Miata manifold
Begi 2.25" downpipe
2.5" Magnaflow exhaust, no cat
Intercooled (18x11x3)
460cc RX-7's
steady 7psi boost (small 8psi spikes)
DIYPNP (MS2)
VTPS
No MAF
How'd I do?
#2
Cpt. Slow
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Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,204
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Well, I managed 155hp/148tq on pretty much the exact same setup but with ms1, a cat, and a 3" dp, and 12psi.
So to say I'm impressed is an understatement. Skeptical would be more accurate.
edit: what gear were you in?
So to say I'm impressed is an understatement. Skeptical would be more accurate.
edit: what gear were you in?
#3
Elite Member
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Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,605
Total Cats: 16
also skeptical. Those are strong numbers.
I got 225 on my 1.8 with a fairly aggressive tune, 2.5" dp, 3" exhaust, 550cc inj, ms1, 12PSI on a fairly fresh t25. (5th gear on 6spd (1:1)) stock rear end ratio. dynojet I think.
Impressive #'s, but I question the accuracy. they are a bit on the optimistic side for sure
I got 225 on my 1.8 with a fairly aggressive tune, 2.5" dp, 3" exhaust, 550cc inj, ms1, 12PSI on a fairly fresh t25. (5th gear on 6spd (1:1)) stock rear end ratio. dynojet I think.
Impressive #'s, but I question the accuracy. they are a bit on the optimistic side for sure
#11
Even with the best tune possible that turbo is not capable of providing the airflow needed to generate that power at that psi level. That turbo at 12-14 psi could produce those numbers.
However, I noticed that the post says "hp" is OP taking his whp and transforming them to fly wheel hp?
However, I noticed that the post says "hp" is OP taking his whp and transforming them to fly wheel hp?
I recently had my 92 1.6L (refreshed, but stock internals) tuned and dyno'd. My base tune was extremely rich, pulled nearly 5% from each bin from the VE table. Anyways,
Garrett T25 (SR20DET)
Flyin' Miata manifold
Begi 2.25" downpipe
2.5" Magnaflow exhaust, no cat
Intercooled (18x11x3)
460cc RX-7's
steady 7psi boost (small 8psi spikes)
DIYPNP (MS2)
VTPS
No MAF
How'd I do?
Garrett T25 (SR20DET)
Flyin' Miata manifold
Begi 2.25" downpipe
2.5" Magnaflow exhaust, no cat
Intercooled (18x11x3)
460cc RX-7's
steady 7psi boost (small 8psi spikes)
DIYPNP (MS2)
VTPS
No MAF
How'd I do?
#14
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,100
1.6L * 72ft.lbs * 1.48bar = 170wtq, and on a 2.25" exhaust, 72ft.lbs/atmo/L is a big stretch.
Dyno reads ~18% high, assuming it reads consistently (a pretty big assumption for a Dynocom unit).
Dyno reads ~18% high, assuming it reads consistently (a pretty big assumption for a Dynocom unit).
#17
Fluffy, please tell us the location of this dyno you used, and the name of the operator.
People have been boosting Miatas for over 2 decades now, and I find it impossible that a legit dyno operator would let you leave his shop believing you made that much power.
The journal bearing T25's are good for about 10whp per psi with a good manifold, big exhaust, and proper tune. In absolutely no way can they flow enough to make the 18whp per psi that your dyno sheet indicates.
People have been boosting Miatas for over 2 decades now, and I find it impossible that a legit dyno operator would let you leave his shop believing you made that much power.
The journal bearing T25's are good for about 10whp per psi with a good manifold, big exhaust, and proper tune. In absolutely no way can they flow enough to make the 18whp per psi that your dyno sheet indicates.