Keebortz

I'm considering adding turbo to my 03' P5, I recently added an intake and my SHELBY DODGE gearhead friend is talking me into a T4 turbo. My question is will I need to replace the exhaust as well. I would like to keep this car as stock looking as possible and that goes with stock sound as well. Basically when someone in a riced up honda wants to play at a stoplight he won't know whats coming.

Thanks for all the advice.

kcidmil

Well my advice is that you're going to have to upgrade your exhaust. Otherwise that turbo would be useless, maybe even hurt your performance. But if you want to keep a low sound, shop around for a muffler that runs decently quiet. I remember someone mentioning a brand name that was quiet in another thread.

Another option which I don't reconmmend. Is open up your muffler, and pull out some of the vanes. (kinda like jesse james did on Monster Garage) But when you do that, you have a better chance of getting a sound that you don't want.

But anyway you look at it, that exhaust is going to have to be upgraded

Roddimus Prime

a T4 on your motor and you can kiss your pistons and rods goodbye. Exhaust noise is the least of your worries with a turbo. The turbo acts as a muffler but it also creates a large whistle noise under the hood. You won't be stealth at all.

Do some more research on what you're planning before you go buying parts.

Keebortz

Yeah, I'm in the fact finding phase of my project. What turbo would you guys suggest? I can't see myself going over a 10lb boost, if the T4 is a bad idea, what is a good idea.

Thanks,
Tim


2003 Mazda Protege5 - White
2001 Suzuki GSX-R 750 - Blue/White

Roddimus Prime

you still don't know what you're talking about (not meant in a bad way). Psi means NOTHING without compressor maps and turbo sizing. You need to pick a turbo based on your engine and the desired output. I would say a T-25 (MSP turbo) at 10psi would be great for a daily driven stock blocker. Several people run T3's at 8psi or so on stock blocks but I'm seeing more and more with blown motors. a T3 turbo is pretty large for such a weak motor. Although a T3 is VERY cheap you could buy a nice one and turn the boost down to about 6psi and if you decide to upgrade later you'd have plenty of room.

I have a 2.3L ford 4cyl with a T3 turbo (first turbo) it ran 23psi on the stock block (ford used forged internals, mazda doesn't) I upgraded to a larger T3/T4 turbo and now run it at 26psi. It is a huge power gain. jumped from about 240whp to 350whp by only adding 3psi....but I'm throwing a lot more into the motor due to the turbo sizing. See how it works? You should just go out and buy a complete kit. Wagner and HiBoost make good kits.

Keebortz

You're right, I'm clueless about this and hence the post. :-) I'm trying to figure out if I really want to do this or not, I came from a SVT Contour to the Protege5... major drop in power and I miss it.

Hey, no offense taken though... thank for the replies. Now if you want to talk motorcycle racing (track, not drag) I can help someone else out!

Roddimus Prime

I used to own a 2000 C-SVT with the 3rd Paxton kit ever made for them on it. It was a huge tub of crap. Transmission problems galore. The car was stolen after about 6 months and the frame was found burried underground in Henniger, AL...country-bumpkin land for those who know. I then decided to buy a focus SVT but after driving one i ended up in the MSP. It was alright but too many ecu complications and a blown motor @ 3200miles did me in. I'm in a P5 now and love every minute of it. The P5 is a bit slower but drives so much better since there are no hiccups in power delivery.

If you don't use your AC you might want to hold out for my supercharger kit for the protege. Should be a real nice kit. Intercooled supercharger with FMU for $2500. Should put down about 180-200whp once I get it tuned properly.

Keebortz

Sounds Sweet... email me when you have it worked out.
tim@keebortz.com <-- Yeah, I'm a geek.. I have my own domain. lol

ddogg777

You should check out the turbo kit that Mental Addiction Motorsports (MAM) has for the Protege5. It is called the street sleeper and comes with an ecu, jet-hot coated hot parts, powder coated cold parts, GT28R ball bearing turbo, AEM wideband gauge, large FMIC, Stainless 321 log manifold. The kit is awesome and the craftmanship is amazing! PM me or do a search over at msprotege.com for more info on stuff that MAM has been making. If you need rods/pistons, they are also the ones to talk to.

Zooooooooooom

I agree with ddogg MAM has great customer service, and you can upgrade to the GT28RS for only 200 more in the street sleeper kit.

Keebortz

Where can I look up the MAM system? Can anyone post the link for me?

Thanks,
Tim

http://mail.keebortz.com <-- Free email without the B.S if anyone is interested. I run this server.

Zooooooooooom

http://www.msprotege.com/forum/showthread.php?t=55747
Heres one of many links
If you'd like to search the FI section on MSProtege.com, you'll find lots of information about his Street Sleeper kit, and the Thumper kit ddogg will be running.

Roddimus Prime

it needs to be mentioned that our engines are VERY weak when it comes to forced induction. They can be upgraded to make LOTS of power but if you don't plan on building your block and going with stand alone fuel management you need to consider something small with low boost.

The supercharger kit I'm designing can support up to 500+hp but I'm shooting for 200whp with a simple black box map sensor and begi fmu. 200whp in a protege is plenty fast enough to turn heads and earn respect at the track.

Just putting a large turbo on your car and blowing it in a few days just makes you look foolish. I should know. I've got 3 turbo pinto engines in pieces thanks to that philosophy.

Zooooooooooom

Who said anything about a huge turbo?
MAM uses a GT28R in his street sleeper kit, which is smaller than a T3, but larger than the MSP T25. Its ball bearing so it spools real quick.
I agree that a FMU is not a proficient way of providing fuel under boost, but there are many other options. MAM is working on the AEM if you want to go standalone, but people have also had success with the E-manage, and the MPI tuner (a rebadged perfect power unit specifically for the protege) With proper fuel management 8-10 psi of boost through a GT28R is going to yield over 200 hp at the wheels easy.
YES building the motor will allow you to make more power, thats a given. via turbo or supercharger, you'll still run into the same problems

macdaddyslomo

actually that t28 is the SAME size as a T25..the difference is the ball bearings...spools much quicker....but it doesnt take a big turbo to break a FS-DE...just more boost than it can handle...I hear about MSP's blowing up on 10psi...unless you stay low boost(like 6psi) my suggestion is build the bottom end forged pistons,rods,wristpins,and ARP studs with a copper head gasket...with proper fuel mangement that can take you a long way with that T28 kit...plus you get to keep your A/C ! ALso a RRFPR is just fine for fuel for lower boost applications like up to probably 15psi