GS - 1st Gen (1993-1997) Discussion about the first generation GS300

Aristo Stock exhuast v.s Gs300 Exhuast

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Old 05-08-09, 10:33 PM
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vindedreal
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Default Aristo Stock exhuast v.s Gs300 Exhuast

Is there any difference/ , I assumed so because aristos are turbo-d . My exhaust was attracting too much attention, so i put near stock mufflers etc on.. My power dropped significantly and I spool slower (as expected) , Im putting in electric exhaust cut-out so that stuff doesnt matter too much. I was Just wondering if the aristo exhuasts were any better.
Old 05-09-09, 02:20 AM
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zazzn
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not sure my mufflers are 2 1/4 in and out.
Old 05-09-09, 11:32 AM
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vindedreal
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Hmm, ur pushing 380 on the stock exhaust? How much psi?
Old 05-09-09, 11:51 AM
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deknick
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the stock exhaust on an aristo is more restrictive, it ha 2 cats, 2 resonators and 2 mufflers, i think the GS exhaust has 2 cats and 2 resonators i think?

and no, there's no way he was able to push 380whp on stock exhaust,

i dyno'd mine with only a first cat delete and 3" downpipe the rest was stock exhaust, at i struggled to get 291whp out of it, cause of the restrictions.

after i opened my cutout i was able to hit 328whp without adjusting boost
Old 05-09-09, 02:30 PM
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vindedreal
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Nice, I plan on doing the same, When you open up ur cutout, do you run rich or lean? r u tuned with the stock exhaust settings?
Old 05-09-09, 05:47 PM
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deknick
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i'm not tuned at all, noone locally will tune the stock toyota ECU, and i have other better things to spend my money on than a fuel ECU upgrade, and well even on the car.

so i run it as is.

i tend to run leaner with it open, and leave less smoke/resuide behind upon launching with it open.

so i'm assuming it's running leaner than with it closed
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