Will the 2.5" Alta header fit my already installed invidia 2.35" catback? my car is an 04'. Would I benefit from this? would gladly appreciate any suggestions

 

Yes it would fit. And they have a ridiculous sale going on right now, so no better time to get the header.

 

LOL!!! yes they do! I bought the v2 intercooler for only $450!!!

 

buy a "j" bung now . lol you'll need it . unless of course you dig the pretty yellow light . try rmw as they will fix any header issue you may have down the road .

 

What is that "j" bung you're talking about now?

 

I ordered the header and sway bar kit from Alta also. It was too hard to pass on that great of a deal.

 

"J" bung is for ur 2nd o2 sensor, but I think the ALTA header has one, but I could be wrong. or go to www.o2simm.com and buy a simulator for around $40 and that nice little yellow light will go away! Thats what I did!

 

Just get two spark plug non-foulers from Autozone and stack them together. About $3 for two if I remember right.

 

What is that!?!

 

+1 thats what I did

 

You need to drill out the top one like this...



Assemble, thread in O2, and you are done.


I have no idea why others haven't been using this. Its cheap, and it always works.

 

huh!?! What is that exactly doing? Does the o2 censor not fit in the bung properly that you would need to get those two spark plug non-foulers!?! Im a little confused.

 

I will pick up a set next time I go to the auto parts store. I am probably just going to install the header in the spring. What kind of exhaust system are you running not-so-redandwhitecooper? I hope the O2 sensors aren't seize. Will have to give it a good soaking with some PB Blaster.

 

It moves the sensor out of the exhaust stream, but still heats up the sensor.

 

Just a one-ball for now. I got tired of building exhausts with my DS MCS.

I'm most likely going to be running a Mynes catless header with a small muffler and straight pipe eventually.

 

Awesome thnx!

 

any thoughts on sound and power gain from the alta header?