What is the best uppipe?
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Thanks for all of the input. sounds like they all do the same thing when it comes to power and the diamiter does not matter. I do think I will look into a uppipe with a flex joint.
joe
joe
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The only reason they fail is high temps. Remove the cat and you lower the temp in the uppipe, and reduce the probabilty of the stock sensor failing. By the way the best uppipe is a stock gutted uppipe. Fits perfect and it has been proven to perform just as good as after market. If you don't want to get dirty gutting it, by the STi uppipe. No cat and perfect fit.
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Originally posted by Silver arrow
The only reason they fail is high temps.
The only reason they fail is high temps.
As for higher temps with the cat removed, try putting a aftermarket EGT gauge and probe into the stock location with a CAT and do some WOT runs, read the gauge then try the same on a car with no CAT. You may be a little surprised at the readings
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Originally posted by Scott@S-Squared
Its a flex unit, but the best feature of ours is that you will not recieve a check engine light unlike the rest. Our EGT probe is installed the exact depth as the OEM unit and will function properly without the need of a resistor inline as a CEL fix.
Its a flex unit, but the best feature of ours is that you will not recieve a check engine light unlike the rest. Our EGT probe is installed the exact depth as the OEM unit and will function properly without the need of a resistor inline as a CEL fix.
There is no point in having that bung there, the EGT sensor does nothing for a catless uppipe. It just jacks up the price of the pipe, and makes me have to search around for a M12x1.25 bolt to plug the hole with.
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Originally posted by BAN SUVS
The EGT shouldn't cause limp mode, just a CEL. What was the code after that happened?
The EGT shouldn't cause limp mode, just a CEL. What was the code after that happened?
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THe presence of the cat doesn't alter the EGTs. It makes them read lower when the engine is first turned on, then when the cat comes up to temp, it is the same temp as the EGTs coming from the engine. Removing it doesn't make the EGTs climb.
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Originally posted by BAN SUVS
THe presence of the cat doesn't alter the EGTs. It makes them read lower when the engine is first turned on, then when the cat comes up to temp, it is the same temp as the EGTs coming from the engine. Removing it doesn't make the EGTs climb.
THe presence of the cat doesn't alter the EGTs. It makes them read lower when the engine is first turned on, then when the cat comes up to temp, it is the same temp as the EGTs coming from the engine. Removing it doesn't make the EGTs climb.
If the CAT starts to over heat thus causing the EGT's to go above a predetermined high EGT level the ECU throws a CEL and goes into limp mode as it thinks the CAT is/has over heated and is likely to dissintergrate thus causing damage.
Mike
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I agree with this. Also, the sti or stock uppipes have heat shielding to prevent the precious heat from dissipating
Originally posted by Silver arrow
The only reason they fail is high temps. Remove the cat and you lower the temp in the uppipe, and reduce the probabilty of the stock sensor failing. By the way the best uppipe is a stock gutted uppipe. Fits perfect and it has been proven to perform just as good as after market. If you don't want to get dirty gutting it, by the STi uppipe. No cat and perfect fit.
The only reason they fail is high temps. Remove the cat and you lower the temp in the uppipe, and reduce the probabilty of the stock sensor failing. By the way the best uppipe is a stock gutted uppipe. Fits perfect and it has been proven to perform just as good as after market. If you don't want to get dirty gutting it, by the STi uppipe. No cat and perfect fit.
Originally posted by Silver arrow
The only reason they fail is high temps. Remove the cat and you lower the temp in the uppipe, and reduce the probabilty of the stock sensor failing. By the way the best uppipe is a stock gutted uppipe. Fits perfect and it has been proven to perform just as good as after market. If you don't want to get dirty gutting it, by the STi uppipe. No cat and perfect fit.
The only reason they fail is high temps. Remove the cat and you lower the temp in the uppipe, and reduce the probabilty of the stock sensor failing. By the way the best uppipe is a stock gutted uppipe. Fits perfect and it has been proven to perform just as good as after market. If you don't want to get dirty gutting it, by the STi uppipe. No cat and perfect fit.
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No the Perrin Uppipe will not throw a CEL as it comes with a resistor fix for the CEL's.
Mike
(510) 487-4447
www.mpjperformance.com
www.gb-motorsports.com
Mike
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www.mpjperformance.com
www.gb-motorsports.com
i thought heat shields are for protecting other parts from the pipe itself? why would an uppipe need to keep heat in, it goes to the propeller side of the turbo right... thought heat differences would be negligible
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Hotter gas
is faster gas. That's why you should wrap or coat (or both) aftermarket manifolds. Keeping underhood temps down helps if you have a TMIC.
San
San
