ahsaw562

i want to turbo my p5 but the problem is that i dont know anything much about mazda im a honda fanatic well just got bored of them so im trying something new, so i got a 02.5 P5 and i want to turbo it and i know the PS has a 2.0 and so does mine. Basically heres the question would a PS turbo system straight off of a PS would fit directly onto my car without any Mods to it im talking about straight plug and play? also another question is would the stock P5 sport automatic transmission can handle the boost with out having it sleep? need aswers ASAP! thanks

ahsaw562

my bad what i meant about sleep was slip. One more thing would black housing PS headlamps fit on my P5, and mods do i need to do with the wiring if they do fit?

J-Protege

By PS I assume you mean the MazdaSpeed Protege?

ahsaw562

yeah i meant the mazda speed protege.

J-Protege

Ok just checking. Yes, the MSP turbo will fit. The engines are the same, so the turbo works fine.

Also, the headlights will fit as well. You will need to figure out the wiring to make it go from a high + low beam setup, to a single H4 high/low combo bulb.

_Kansei_

I have no idea how well the sport automatic transmission will hold up, but I know the older automatric transmission is good for ~160-170whp before you need to buy expensive upgrades for the transmission (why not just take the transmission and throw it off a cliff, then get a manual transmission from any 2.0 Protege, install the MSP limited slip, install the Exedy clutch from the MSP, the MSP clutch fork and throwout bearing, and be done with it)

kargoboy

For that kinda money he could just bought an MSP, lol.
Anyway, I never thought of this before but what kinda EMS is he gonna need?
He can't use an MSP ECU...

KrayzieFox

See guys this is exactly what's holding me back from going turbo. I have a 03 P5 with the same type of auto tranny as the 02.5 (sport tiptronic deal) and it's a pain in the *** for turbo applications.

The tranny will handle up to 7-8 psi. As long as you stay at or below ~180HP you'll be fine, but anything above that you're asking for trouble. One thing you would really want to do however is install an auxillary tranny cooler to allow for proper cooling caused by the additional stress the turbo is gonna put on it.

_Kansei_

You'd have to use a voltage clamp and RRFPR --so a wideband would be ESSENTIAL.. I dunno how much I'd trust it.. yeah yet another reason to ditch the autotragic

I think Mark (bazooka joe on some other forum.. and on here but he doesn't post enough) switched from the MPI tuner to a voltage clamp and RRFPR setup because the MPI was too much of a pain for a daily driver.

aMaff

interobang?!

KrayzieFox

So if you're really serious about this, here's what you're looking at.

You can use the MSP (MazdaSpeed Protege) turbo components and practically do a direct conversion, because the engines are the same, or choose a different route and go with some custom parts.

1) You need a turbo manifold
-You can use the MSP Callaway mani but those tend to crack a lot, so I wouldn't necessarily recommend this but it would be the cheapest. If you can find one with low mileage for around $100-$125 then I say go for it.
-The guy who posted above me (Kargoboy) is also offering a direct replacement turbo manifold made by Thunder that will probably outlast your whole car, so if you wanna do this right I highly recommend getting one of his manifolds. It's more expensive at around $350 but well worth it cuz you won't have to worry about cracks and exhaust leaks.
-OBX also offers a tubular manifold like Kargoboy's but OBX has not exactly proven itself to be capable of delivering high quality products. You also would need a different turbo than the one from the MSP because the OBX mani uses a T3 flange and the MSP turbo requires a T2 flange.

Recommendation: Thunder mani from Kargo, or MSP mani with low miles

2) You of course need a turbo
-Stock MSP came with GT25R turbos, which is a dual ball-bearing T2 flange turbo. I say this is gonna be your best pick. Since you have an automatic you really don't want a stronger turbo cuz it will eat your tranny for breakfast. The T28 "disco potato" would be an excellent upgrade, but your tranny wouldn't handle it.

Recommendation: Stock MSP GT25R turbo

3) Cooling
-If you go with the MSP turbo setup you're gonna run into problems with one of your radiator fans, so you'll either need to invest in some slim-line fans or just convert to the MSP radiator setup. Its the same as the P5, but a little thinner so it gives you more room for the fans.
-Also, if you'd like to copy the MSP cooling setup you're welcome to utilize the stock side mount intercooler (SMIC) they came with. It's a relatively small but effective IC and you can use all the stock pipes with it as well. A cheap and effective option for sure.
-Otherwise, you can install a front mount (FMIC) for added performance and looks but you have to either get some custom made IC pipes or purchase some aftermarket ones.

Recommendation: Just use the MSP radiator, fans & SMIC cuz once again you really don't want any more power anyway so a bigass FMIC won't do ya any good.

4) Fuel management
-This is the part that SUCKS THE MOST about wanting to turbo an automatic P5. If you had a manual P5 then you could just use the MSP ECU and call it a day. But since MSP's didn't come with automatics that's not gonna work so you need to come up with somethin else.
-The most effective alternative I've come up with is to use a Flyin Miata voltage clamp along with a rising rate fuel pressure regulator -- BEGi makes a good unit. Our cars run pig rich from the factory, so the o2 voltage clamp does the trick on the ECU to prevent it from running too rich, and the BEGi RRFPR supplies the additional fuel needed under rising boost. It's not as easy to tune this setup, but it works if you have enough patience for it.

Recommendation: The FM o2 V-clam & BEGi RRFPR are honestly about your only option here

5) Wideband
-A wideband unit such as the AEM is a MUST for this type of setup!! Don't waste your money on a narrowband .. it's just a light show.

Recommendation: AEM Wideband


You can figure out the rest. Vacuum lines, oil lines, etc. that would be involved with any turbo setup will be required so if you know anything about turbos then you should have this part covered. Otherwise, do more research and post back if you have any other questions.


GOOD LUCK!!!

kargoboy

^^that is worthy of a sticky, I think.

KrayzieFox

Why thank you Gary, but I think what I'll do it start a different thread with some of the same info and add a whole bunch more detail, pics, etc. to it. So let's not sticky this for now..

TheDirtyGoatee

Yes but, if you have a P5 that looks like stock and some stupid *** Si or GTI or SE-R comes by and they think you're running stock, then you turn around and spank them, that gives the P5 even more street cred. Typical sleeper style. I like the idea. I say, do the work. Let's grab a beer.


just uhhh...watch out for that GTI pictured below. It's fast as hell, trust me on that.

aMaff

man, not one comment about how huge my grammatical e-***** is. *going back into my corner now kthnxbai*