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I did not have a base line done but after doing a volant CAI and magnaflow exhaust it dyno`d 310hp 308tq I was thinking of getting cams and head work but never did http://www.chrfab.com/ but I am building long tube headers for it so I will re dyno after they are installed.

Wish I knew the was no aftermarket support for the 4.6 I would have gotten a V

Not much you can do the cold air kit and exhaust but if you want a big gain you have to do the heads and cams http://www.chrfab.com/

The part number is 46701

Anyone seen the new magnaflow cats for a direct fit yet ???

I want to know the injector size in my 2004 xlr and if you can get bigger injectors and a mass air flow meter to calibrate the ecm

I`ve checked it thanks

I`m curious how many XLR`s are on the road today and what the interest in performance parts are ?

I got my rims that i`ve been waiting for :blinzel: I have pics but cant upload them.

well I have a coolant leak from the t stat so i was thinking of lowering the operating temp a bit but i just ordered a gm replacement.

Is there a cooler Thermistat avalible for the 4.6

Its still $20000 more at least to buy a V so I was thinking of other options.

do you think the LSX454 Crate Engine would fit into a 2004 Xlr

I know I wont know how much I added but for my cadi I`m happy:wave:

outside temp was 19 c

I was thinking around the 290 mark but 2 pulls back to back first pull was 308hp second pull 310 I didn`t tune it just put on CAI and the cat back but didn`t go to the dyno until after the changes.

went to the dyno yesterday the car made 310HP and 308TQ I have an 04 with a magnaflow exhaust and volant CAI :cool:

What is the widest tire you can put on the 2004 stock wheels.

no they are two cone filters more surface area to pull in air

The magna flow has great looking tips also sounds great and the price is way less