I looking into getting new headers for my 04' hemi. Does anyone think this would be a noticeable gain?What companies should i check out for this.


-ry

 

Yes you will feel the extra HP. A good set of headers can give you 20-30HP. Good headers can be found from dynatech, hedman, gibson, and there are many brands to choose from. And just because a one set is more expensive then the other doesn't make then better. I myself am probably going to get hedman headers.

 

I think "depending on what headers you choose" you can see a solid 15-20HP gain, maybe even 25hp. If you are going the header route, make sure the rest of your exhaust system is up to the task. After Market muffler should be a must and consider some hi performance cat's as well, I think magnaflow has a replacement Y-pipe as well or you could have one made for you at the local shop.

 

I'm glad you posted this cuz i want to get the same thing for my 05. I have already put on a single in/dual out super 40, but they didnt replace the ypipe. What all pieces do i need, should i be thinking about going trual dual if i get headers?

 

I want the dynatechs. They got the whole setup. stainless headers, 2 high flow cats(one for each side) and Y pipe. Bolts straight up with no cutting or welding( I like DIY stuff). Only thing is they are high as hell, bout $1300-$1400 for everything, but its a sweet setup. They are full length btw.

 

Gains with shorty headers with mufflers behind them are usually about 2-3%

Full length headers without mufflers on street engines usually gain about 4-5%

http://popularhotrodding.com/enginem.../0602phr_hemi/