i have a regular suby right now, if i get this part of an sti will it make a big hp difference in comparisson to an after market up and dp?

 

no the stock STi still has cats

up pipe is catless its an improvement

CN: up yes dp no

 

If I am correct, there is no difference between the WRX DP and the STi DP. Basically the same. They are both catted, and they both have the same flange at the turbo. I don't think that the ID is diffent either.

lugnutz

 

won't make any diffirece, btw the uppipe from the STi does not have an EGT port either. If you get uppipe it is strongly recomended that will house the EGT sensor. my .02cents

-Oscar

 

I wouldn't want to have the EGT sensor bung for my uppipe. I actually took a bolt and plugged up my EGT sensor bung on my Helix catless uppipe and used a resistor instead of the EGT sensor. That EGT is not needed once you remove the cat. That EGT was designed so that your ecu can detect when the engine spits flames. Flames in a catted uppipe will allow the cat to actually break away into the turbo. Other than for that reason, you do not need the EGT sensor or the EGT sensor bung.

-Ryan

 

Exhaust Gast Temp Sensor, yeah that's there for a reason.

-Oscar

 

egt has to do with tuning

if it gets too high you will be in trouble and will be talking to oscar for a new motor

 

my egt probe is in my header....

 

There are two types of EGT probes. The one that comes stock in the uppipe only detects if the temperature is too high for the catalytic converter in the uppipe. You would want to have one in your exhaust manifold that detects the EGT so that you don't start melting the block and internals. There is no use for the EGT in the uppipe once you remove the cat. However, you would want one in the exhaust manifold for tuning.

 

YEAH, that might not be such a bad thing

 

i have an 04 sti uppipe that i want to put in my 05 wrx. after reading this is it or is not a good idea to do?

 

thanks guys

 

HAHA do i get comission on that too hehe


25lbs of boost yeah lean it out more hehe