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Old 09-23-2004, 04:17 PM   #1
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Turbo-What would happen if...

What would happen if I ran a small T3 off a tubular manifold, using a larger maf and injectors, running 2" pipe to a blow off valve then directly to my throttle body(non-intercooled).

Think my car would be healthy if I ran 7psi with the turbo, injectors, and new maf without computer tuning to my svt ecu?

Id probably want computer tuning down the line, but how would my car react technically if I did <just> those things?

Im really curious to hear some wise replies, hehe



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Old 09-23-2004, 04:26 PM   #2
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i would say this = new motor

i have seen many svt's on the dyno and they seem to always run lean from the factory, in the 13:1 and i have even seen 14:1 on a guys svt with a short ram intake! wow, thats scarry,lol. the MAF and the injectors will do u no good if the ECU doesnt reconize them, you do this by a flash or a chip. and you need to remember that the stock timming and compression are too agressive for a turbo with out a tune, and 7 psi is wayyyyyyyyyyyy to much boost with no tune, you will have deto in no time and i see a new motor in the near future if u do this

my .02

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Old 09-23-2004, 04:49 PM   #3
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^^^ yea you would have to get the SCT tune whenever it comes out. you could not run any boost on an SVT without some sort of tuning. boost will kill your car quickly. ud be lucky to get on it once, before it blew.
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Old 09-23-2004, 06:21 PM   #4
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serious, do you know the process of me sending my ecu to sct and what type of info they would need, anyone have a reference or email for em
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Old 09-23-2004, 06:22 PM   #5
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I dont wana blow my shit up, i love it too much, but I do wana get some boost in her, safely
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Old 09-23-2004, 07:35 PM   #6
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Over at the other forums they were saying that they were running 7 psi but not to exceed 8 with the current high compression ratio of the piston 10:1. You'd have to go to a lower compression piston if you wanted to run a higher boost.
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Old 09-23-2004, 07:43 PM   #7
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They say to run 7 psi max on svt? Even with engine tuning?

Wasnt that turbo svt focus in turbo magazine running over 7psi...

Doesnt the maf up the fuel/air because its larger and will be reading more incoming air? Then the injectors match fuel out?

Thats not enough for a turbo to run correctly on a svt engine?

Im confused //x/x/x/x//
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Old 09-23-2004, 08:12 PM   #8
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Fuel/air isnt your biggest concern. With a compression ratio of 10:1, 7psi would kill your motor pretty quick- gaskets couldnt take the increased pressure. Like RockyNBullwinkle said, you would need low compression pistons, or, an easier route, some thicker head gaskets to lower the compression ratio. I'm not too into F/I, but I think most boosted cars run a compression ratio of between 8 and 9:1
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Old 09-23-2004, 08:24 PM   #9
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Trying to boost your car cheaply=blown motor. Biggest thing to worry about is air/fuel ratio. You'll need some kind of custom computer tuning to fix it. It'll go really lean without it.
I'd say you'd need at least $2000 to even think of boosting your car.
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Old 09-23-2004, 08:28 PM   #10
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Yea, I just re-read my post, and I wasnt very clear with that first sentence. Air/fuel ratio is hugely important. So is the compression ratio, and adequate cooling, and ......
Basically you cant put one thing in front of another. Going off of what Lil_Red said, dont go cheap! I would even venture to say $3000 for a safe job.
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