i was given a good rebuilt precision 3231 turbo and greddy intercooler today and i think im going to add it to my m50 build ( its free why not huh?)
now for the questions:

will a .140 head gasket lower the compression enough for mild boost levels (under 25psi prob 10-12 for normal driving use) on 93 octane?

has anyone used the treadstone manifold yet? i saw people talking about it but no reviews yet

what managment? e-manage, ms, or autronic sm4?

does AA flash stock computers for boosted cars?

what prices am i looking at for the management, i know sm4 is like 2k when all is said and done, and i know ms is in the 500 range but is a piggyback and a diy solder yourself kit if i remember correctly

^^ All of your questions have been answered through the most basic builds! Try searching for these questions/answers, you would be amazed at what turns up!

yeah i just couldnt find anything on the treadstone manifold really, has anyone used one yet?

There was one guy who bought one becuase his WG piping wouldn't fit with the spa manifold and M roadster. I don't think he ever installed it though, and I think the spa was evenutually used.

If you're staying OBD1 on your M50 swap, go with a TRM DME tune.

If you're staying OBD1 on your M50 swap, go with a TRM DME tune.

where can i find more info on the tune and what kind of prices are they?

i guess ill be the first to try the treadstone manifold, ill post pics of the whole build as it goes in a couple of months.

my other question was will the 3231 precision be enough turbo for the car, im just doing s50 cams and a .140 hg, im debating on wether or not to set up a stock or plenum type intake manifold but i see most peole here are running gt30r/ gt35r turbos and i believe the precision is the equivelant to a gt28r. the car is a daily driver so i only want to make 350hp at the wheels maximum, enough to be able to rip it a little when i feel the urge and to be able to keep up with most of the guys over at the cruise meets, maybe be able to take on a mild evo or sti

You can contact Techno550 directly, however from what I read in another post he will be out of town for a bit. Contact Matt, also the names listed are their forum names! They can be PM'd at anytime! Hope this helps!
-SAL

thanks i appreciate it

Thanks, Sal. Mike will be back in town shortly, I have just been covering for him a bit while he's gone. Shipping things out and such.

The software is on the website: http://www.racersmarket.net/catalog/product_info.php?products_id=130&osCsid=939dff7576388dc0db03aa6d02f9bb97

Basically, the software lets the stock engine management system control the turbo motor with all the smoothness and drivability of a stock motor, at double the power level or more. :)

Thanks, Sal. :)
No problem bro, glad I could help! I remember when all I wanted was 350WHP, that came and went oh too fast :help. F/I is an addiction for sure :buttrock:redspot!

so with that software i wont need any other piggyback systems (ms/ e manage) ?

again what kind of power will i be looking at with the 3231 @ 10-14 lbs?

No other piggybacks needed. Fine tuning can be done remotely, you send Mike whatever data you have for the car (dyno plots/air fuel ratio etc) and he sends back another chip.

Do you have any specs on that turbo? I am not familiar with the precision lineup, and when I google it, this thread is the only relevant result. :dunno

its a t3/t4 7 vane oil cooled, the compressor housing is marked a/r .60, the hot side is marked a/r .63 and says precisionon it, i had the compressor housing off and measured the top and the base of the blades but i fergot the sizes haha. i was told its about the equivelant to the gt28r

heres some pics of the turbo, and yes thats nickeloden playing in the background

http://img.photobucket.com/albums/v61/mirrormirror/Photo590.jpg

http://img.photobucket.com/albums/v61/mirrormirror/Photo589.jpg

http://img.photobucket.com/albums/v61/mirrormirror/Photo560.jpg

Are you sure thats a precision? It has no markings to indicate so.

its a precision, the rectangular casting in the first pic on the hot side says precision, i just couldnt get a close up because im tring to take pics with a macbook

what managment? e-manage, ms, or autronic sm4?

does AA flash stock computers for boosted cars?

what prices am i looking at for the management, i know sm4 is like 2k when all is said and done, and i know ms is in the 500 range but is a piggyback and a diy solder yourself kit if i remember correctly

Just so you know, Megasquirt is not a piggyback. It is a 100% standalone system. Also, the MS ECU costs 250 as a kit and 400 assembled, though there are other things you would need to purchase.

That having been said, a DME tune will likely be 10x easier than messing with MS. Mike at TRM knows his stuff.

Also, if I understand things correctly (10lbs of boost is 10lbs of boost no matter which turbo you use) 12lbs should get you above 300whp.

Also, if I understand things correctly (10lbs of boost is 10lbs of boost no matter which turbo you use) 12lbs should get you above 300whp.

Not exactly. Larger turbos make more power on the same boost.

Boost != Flow

If you are taking the reading from the manifold, why should it be any different?

Boost != Flow

Quite true, but isnt the flow dictated by the engine, not the turbo?

thanks for the help about the ms, i was under the impression that ms was a diy piggyback to control either injector or spark alongside the stock dme, but the tune seems like a lot better of a choice.

as far as the turbos go, to my understanding; a bigger turbo will make more power on the same amount of boost because it has bigger internals and outlets, a k04 wouldnt make nearly as much power as a gt30r if they were both set at 5 lbs, what im trying to figure out i if this turbo will be enough to make maybe 300-350 at the wheels, which is probably a yes, i just dont want it to be spooling to full boost at 2k (im exaderating) where if i have a wastegate dumping into atmosphere im going to be chirping it open while driving the car soft, it could get annoying while commuting and sutch, so as weird as it sounds im hoping for decent lag in the turbo so the car can be more streetable if that makes sense to anyone.

http://www.precisionturbo.net/small-frame-turbochargers.php

about a quarter of the way down is the 3231

thanks for the help about the ms, i was under the impression that ms was a diy piggyback to control either injector or spark alongside the stock dme, but the tune seems like a lot better of a choice.

as far as the turbos go, to my understanding; a bigger turbo will make more power on the same amount of boost because it has bigger internals and outlets, a k04 wouldnt make nearly as much power as a gt30r if they were both set at 5 lbs, what im trying to figure out i if this turbo will be enough to make maybe 300-350 at the wheels, which is probably a yes, i just dont want it to be spooling to full boost at 2k (im exaderating) where if i have a wastegate dumping into atmosphere im going to be chirping it open while driving the car soft, it could get annoying while commuting and sutch, so as weird as it sounds im hoping for decent lag in the turbo so the car can be more streetable if that makes sense to anyone.

Makes sense.


Wastegates don't chirp. Blow off valves chirp. Wastegates whoosh.

yeah, i meant like having it crack open atthe top of the gear while street driving, i know the poppet valve ones like to creep open, and the butterfly gates tend to crack open real quick, i was thinking of running a diverter valve instead of the blow off so i dont get the rice whistle, and it will keep the car a little more below the radar, im trying to keep the car with as much street manner as possible, not really sleeper but not really hi profile, i feel like if i threw on a big hks bov people are going to think im running a lot more than i really have, also i think the flutter of the diverters is way more badass lol, does anyone have any reasoning against a diverter over a bov? i think the only advantage of the bov is a quicker release of pressure

- not being a kissass but again, thank you to everyone who has posted any suggestions and helped point me in the right direction, i really appreciate the help

bump, any ideas on what kid of power i can make and wethere the diverter or the bov is better?

turbo's dont boost on RPM, they boost on load.
you could be doing 6000rpm, and not see over 2 lb.