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Discussion Starter · #1 ·
I suddenly got interested in japanese turbo cars, after a test drive with a GSX. Im wondering about the GT motor, and how it handles mods. How much boost is it running stock? Could it be bumped up to 14 or so with out major work to the motor?

Does anyone know how much boost the GSXs are running? The guage was on 14 when i drove the car, but iv heard that they really run 11 or so.
 

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Ohhhhh, YZF thinking turbo car finally, eh? They are impressive, huh?

I may not know all the specifics, but I believe that stock setting on a GT MX6 is about 9psi or so. Anarchy34x is running 12-14psi on a motor with 159K miles, no problems yet. I am also told that they respond very well to mods (haven't had the time or money to beef up mine yet).

It is a little hard to find a clean GT though. You'll definetly be a little more of an MX6 fan if you try one out.

My personal opinion--just opinion, is that on the street, stock to stock, a 1st Gen GT might just barely by a few feet beat a 2nd Gen LS (V6) if both are driven right. But that is just my opinion!! I hope nobody starts freaking out. I have ridden in 2 2nd gens, one auto, and one 5spd.

It is no doubt, though, that it is cheaper/easier to mod out a 1st gen and get good results.
 
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I beleive the stock PSI on a 1st Gen GT is about 7.3. I have been told they can be pushed to 12-14psi without too much having to be done.
 

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Discussion Starter · #4 ·
As cool as that GSX was, i really wasnt as impressed as i thought i would be. It felt like my old DX did, with a little more "umph" when reved higher. I figured if i were to get a turbo car, it might as well be a car that i know. About 2 years ago, i was strolling around in my DX in the lots, and came accross an imaculate as f&ck GT. It was a 92 and only had something like 80000 miles on it. I wanted to buy it and let the DX sit there at the side of the house like a parts store. But on my way home to do some homework on the GT i got myself pulled over by a tribal cop and harassed for about an hour and a half. I figured that if i got in that much trouble with a DX, the last thing i need is a GT. Its been a while now, and i think my truck has changed my driving style. I think i can actually behave myself, as hard as that is going to be.

That really gets me excited to hear that the GTs are getting that kind of performance with 7-9 PSI. I really feel like that bullet proof 2.2 could handle 14 PSI. That would be such a fast car. I think im going to do it soon as i find the right GT.
 

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Yes, the performance is pretty impressive for such a low Psi setting. I wouldn't go above 14Psi without changing some things in the motor. I believe my current MX6 GT is pushing less Psi than my 90 model. If this car is pushing 7.5 or so, then my other one was probably pushing more like 9psi or something--I wish I would have had time to get a boost guage put on it!!! I couldn't imagine what 14psi would feel like....you'd probably have to hold the wheel pretty tight (I already have to do that with my 89).

If that GSX felt like your DX, then either you have a really fast DX, or the 4wd on the GSX really slows it down or something. My GT totally smokes my sister's DX.



[Edited by jiffy6969 on 04-06-2001 at 01:19 PM]
 

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Stock boost is a max of 9.3 psi at 3200 rpm's and 7.3 at all other rpms. The stock engine will take 14 psi easily as long as the rings are good and such. They are easy to mod, and fun as hell to drive!
 
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Is there anyway to check or test the rings to see if they can accomodate that 14psi?? And I have also heard that 1 jump in psi is approx. 5-7hp. Am I wrong? so another 7psi is approx. 35-49hp
 

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Discussion Starter · #9 ·
What does it take to up the PSI? Just as simple as the blow off valve? or what?


As far as my DX feeling like the GSX, yeah it felt the same until the turbo kicked in. And the all wheel drive didnt seem to exist. I honostly couldnt feel it at all. Any hard turns in that car felt the exact same as my dx did.
 

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I read a post from someone on here who lived in a high-elevation climate that ran 18psi one day on the stock turbo. Could be a myth....
 

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My '89 MX-6 GT has 171K on the car/motor. I put in a mild turbo upgrade and it is at 15psi, in fact, it has been set at 15psi since 1997 (35K miles). So far everything is holding up well. Last week the car dynoed 197hp to the wheels, and 259 ft lbs of torque. So they are very durable and with a computer upgrade (I have a superchip) you can safely run 15psi all day. I have heard that you can run 17psi on the stock internals, but my BOV needs to be upgraded in order to turn the boost up that high. BTW, before I upgraded the turbo, my personal best 1/4 mile time was a 14.4 @ 97mph, so there is a lot of potental with the Mazda 2.2:D
 

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Discussion Starter · #12 ·
HOLY MOTHER OF GOD!
190+ TO THE WHEELS?!!!! HUMINA HUMINA HUMINA


alright you just convinced me to stick with the GT. Before i would have settled for and Eclipse Turbo, but now? pfffff. Im sold on the GT.

As for the high altitude thing, thats good to know. I live at about 7200-7500 FT.
 

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TURBO UPGRADING

There is a way you can upgrade your existing turbocharger for the 88-92 mx6 GT. You would have to send the turbo to somebody I know and they will rebuild and upgrade it to 25psi (I wouldn't recommend going up to 25psi but it will handle 22-23psi all day long). You would also have to upgrade your existing computer chip and your fuel injectors by atleast 10%. I have found the fuel injectors to run around $70 each. And the chip will be around $198 but the biggest amount is (and don't be alarmed), to upgrade the turbo will be in the $560-$600 range. I would also recommend upgrading your intercooler ($700) and the piping for it ($300-$350) to.
 

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I don't believe that the stock bottom end will handle "23 psi all day long". That's a pretty vauge phrase anyways and doesn't really mean anything. Maybe you meant that literally... in that case then yeah, maybe it would last a whole day on 23 psi :)
 

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Well when I talked to my turbo specialist buddy he said that the turbo would be able to handle that much psi. I don't know about the bottom end.
 

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..."for a day" :)
 
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