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post #1 of 35 Old 02-04-2013, 11:24 AM Thread Starter
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hp at 14 psi?

Anyone know how much power a 2.5t1 would produce if a intercooler was was added and boost turned up to 14psi with fwd stage 2 Cal just. Wondering what I expect
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post #2 of 35 Old 02-04-2013, 12:29 PM
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Re: hp at 14 psi?

Probably somewhere around 190 hp and 200-210 torque
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post #3 of 35 Old 02-04-2013, 01:53 PM Thread Starter
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Re: hp at 14 psi?

OK that sounds good to me. Can't wait to finish my project
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post #4 of 35 Old 02-04-2013, 02:06 PM
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Re: hp at 14 psi?

I think I was told once about 7 h.p. per psi. so take the stock number and go from there.
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post #5 of 35 Old 02-19-2013, 06:48 AM
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Re: hp at 14 psi?

rule of thumb is generally 10hp/psi. so your 2.5 is stock 150 hp(est.) at 7 psi, so at 14 you'd be at 220ish... im just going off what i did with my daytona shelby back in the day. had a garrett t2 on it at 15 psi, i was eatin honduh vtechs and runnin with 'vetts all day. expect to change your head gasket every couple months though (i even had performance gaskets). chrysler did a shitty job with the 2.5 heads, aside from putting the exhaust on the wrong side of the engine...
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post #6 of 35 Old 02-19-2013, 07:57 AM
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Re: hp at 14 psi?

I plan on running the dyno this spring with my 2.5T w/Garrett T3/boost button stage 2 calibration and stock intercooler so we can have some hard numbers on here

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post #7 of 35 Old 02-19-2013, 09:33 AM
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Re: hp at 14 psi?

well the high-torque 2.5 TI was kickin 210 ft-lbs at 11(?) psi ..
and a 2.2 TII was 174 Hp at 12 psi ..

presuming yu've got the fuel close, and a decent exhaust system:
205 Hp & 235 ft-lb estimated crank Hp
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post #8 of 35 Old 02-19-2013, 09:41 AM
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Re: hp at 14 psi?

The previous owner of my car, a 1991 Daytona C/S T1 non intercooled, had three free dyno runs with his new engine. In the last dyno run he claimed it made ~205 HP @ ~253 lb ft of torque at 14 psi and a 2.5" free flowing exhaust. That engine later detonated however.
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post #9 of 35 Old 02-19-2013, 01:17 PM
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Re: hp at 14 psi?

Quote:
Originally Posted by bamman View Post
The previous owner of my car, a 1991 Daytona C/S T1 non intercooled, had three free dyno runs with his new engine. In the last dyno run he claimed it made ~205 HP @ ~253 lb ft of torque at 14 psi and a 2.5" free flowing exhaust. That engine later detonated however.
Shame that probably would have had much better gains intercooled.. and no detonation lol. Decent power though considering.
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post #10 of 35 Old 02-19-2013, 01:45 PM Thread Starter
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Re: hp at 14 psi?

Well I talked to Cindy at fwd performance and she said I should get the stage 3 computer because the stage 2 was not set up for an intercooler so ill b running 15psi and and a stock t2 intercooler with charge air sensor. Just hope the factory blow off valve will be able to hold the extra boost
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post #11 of 35 Old 02-19-2013, 02:40 PM
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Re: hp at 14 psi?

i have no idea how the stock BOV works (only T2 cars owned/I've seen in person had aftermarket aluminum piping) but if it's a setup any similar to an RFL and the spring's accessible, you could put a few washers in and it'll hold more boost, or just put in a thicker spring. Don't go too far though otherwise it won't open. I'd rather have a leaky bov than one that backspins the turbo every shift.
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post #12 of 35 Old 02-19-2013, 03:02 PM
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Re: hp at 14 psi?

Quote:
Originally Posted by Frostbite1991 View Post
rule of thumb is generally 10hp/psi. so your 2.5 is stock 150 hp(est.) at 7 psi, so at 14 you'd be at 220ish... im just going off what i did with my daytona shelby back in the day. had a garrett t2 on it at 15 psi, i was eatin honduh vtechs and runnin with 'vetts all day. expect to change your head gasket every couple months though (i even had performance gaskets). chrysler did a shitty job with the 2.5 heads, aside from putting the exhaust on the wrong side of the engine...
Every couple of months? Were you not surfacing the head. I ran 14psi (still run 12psi) daily until I melted a piston (stupid injector harness) and have never blown a head gasket.
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post #13 of 35 Old 02-19-2013, 03:04 PM
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Re: hp at 14 psi?

Quote:
Originally Posted by danbosman View Post
Just hope the factory blow off valve will be able to hold the extra boost
def. ditch the factory plastic "BOV" p.o.s.;
they are known to leak even at stock boost levels ..
my firsthand experience here backs that up too.

yu'd do better to run No BOV rather than the stock unit, leaking boost

if yur cheap- Gen1 DSM are metal, and will hold at least 15 psi;
yu'll need some fab. skills to integrate into a typical TD setup however...
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post #14 of 35 Old 02-19-2013, 03:22 PM
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Re: hp at 14 psi?

I added a cheap chinese BOV and cut the spring a bit softer, one of those with a 1" inlet and added it to the 2.5 BOV hose.

boost isn't boost, past 10 PSI your not gaining much with the mitsu. So 14PSI with a Garret turbo swap is a bigger gain with the stage 2. In other words HP per PSI is higher with a bigger turbo.

I would say 170 with a Mitsu turbo and 190 with a Garrett.

As the price of a stock Daytona intercooler setup has dropped. I'd consider the intercooler and a stage 3 though.

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post #15 of 35 Old 02-19-2013, 07:18 PM
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Re: hp at 14 psi?

As for replacing the the factory BOV, I've found this little Ebay number works well, fits well and doesn't cost much. You just need the little adapter to make it fit the stock hose, an o-ring to seal it off and some sort of filling adhesive for the adapter. It has a metal piston with same size faces on both sides so it's always equalized when under pressure, no diaphragm to rupture, no need to fiddle with spring pressures/washers ect. Just need to buy the brass elbow on top also.

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