Here's what I got:

-jdm SR20DE 10:1 swap
-B14 transmission w/ lsd
-T25 turbo setup, stock manifold and o2 housing
-3" downpipe
-custom 3" exhaust
-custom charge piping
-370cc injectors
-z32 maf
-nology spark plug wires
-msd blaster coil

It put down 227 hp 213 tq on 7lbs

I was wondering how much boost I could safely push it to.

Just enough to where the wastegate still opens. Mine only holds 12 psi through redline. You can't really blow it up with a t25 as long as you have enough fuel.

what do u have to monitor ur a/f and can u adjust it. What injectors u running.

i would say, we need to know ur fuel set up because if u run higher boost and dont add more fuel = lean and that is bad.

it's eprommed and dyno tuned ecu, plus i have a aem wideband in the car with an apexi safc and apexi avcr. The fuel setup is just 370cc injectors , stock fuel rail , stock fpr and walboro 255.

then just if i assume ur running stock boost, just slowly increase it and watch the knock sensor, it u can data log. The reason is *** ur have a bit higher compression for boost and u dont wanna blow up, so its all up to u, increase the boost slowly, u know ur car best and its all up to u.

With my t25 I ran 10psi with no prob

Seeing as how I have no turbo experience, I would recommend you run as much boost as you can. If the engine blows up, then just dial it back a notch. That should be the sweet spot.

then just if i assume ur running stock boost, just slowly increase it and watch the knock sensor, it u can data log. The reason is *** ur have a bit higher compression for boost and u dont wanna blow up, so its all up to u, increase the boost slowly, u know ur car best and its all up to u.

How did you data log the TP, via Data Scan?

With my t25 I ran 10psi with no prob

Did you also run a 10:1?

Seeing as how I have no turbo experience, I would recommend you run as much boost as you can. If the engine blows up, then just dial it back a notch. That should be the sweet spot.

Yup that's the best advice....



To get a new engine ;)

Im running 15 psi all the time on a stock sr20de+t and havent had any problems yet its all in the tuning. If you have a good tuning program and tuner the only weak link would be the head gasket.

leave it at 7psi and enjoy it. I ran 10psi on my t25 jdm 10:1 motor and made 258whp but this was only while at the track and other events. Tune it and enjoy it the way it is.

leave it at 7psi and enjoy it. I ran 10psi on my t25 jdm 10:1 motor and made 258whp but this was only while at the track and other events. Tune it and enjoy it the way it is.


like this one, I kinda wanna put it up to 10 or 12 though. I don't really drive around boosting all the time anyways seeing as gas is hella expensive. This car put down 227 on 7 lbs so I'm guessing I'd be close to that with 10?

Just enough to where the wastegate still opens. Mine only holds 12 psi through redline. You can't really blow it up with a t25 as long as you have enough fuel.

Another good point, considering I'm not planning on upping the turbo anytime soon do to the fact that I built the car for autocross.

I would consider adding a nismo fpr if you are gonna turn the boost up. The 370's will max out pretty quick at 3 bar fuel pressure.

leave it at 7lbs....going higher than that will put you into the danger zone