Thought I would give my review of the Ripp Headers that I installed on my 2010 JK. First off my Jk was stock with about 20,000 miles. The install was not to hard the instructions where good, the fit and finish on the parts were good. One problem is they say to re-use the manifold gaskets, they tore trying to remove them. Good thing I bought new ones before, and for the price they charge they should be included. The heat shields also are to be reused, the drivers side fits but right side not so well. No heat shield is used on the y-pipe under the trans like stock so I used header wrap. After about 2000 miles I have had the check engine light come on 5 times with either a slow response on the rear O2 sensor or convertor efficiency. The performance is good. Not to happy with the check engine light coming on, and I suspect it wont be the last!

 

Was there and exhaust leak causing the o2 slow response ?

 

Did you purchase the Diablo tuner and use their custom tune as well?

 

I appreciate the honest response...Ive been saving for these headers for a few months. Only thing is I have a 2011, so theres no tuner. Im curious on what the hp/torque is without the tuner. I may just bypass this step and continue saving up for the supercharger. I think the power is 25hp and 35ish torque. I wouldn't mind spending some cash adding over 10% more power, but if the power is not near that without the tuner, I think I may just keep saving for the supercharger.

 

I was looking into this a while back as a means of getting extra oomph without having to resort to forced induction. From what RIPP posted on another forum, a stock auto gets about 130 HP and 150 ft/lbs. An auto with the headers but no tune is about 145 HP and 175 ft/lbs. And if you go all out and apply their premium-fuel tune (2007-2010 only - damn ECU encryption!), you can see around 180 HP and 230 ft/lbs. (RIPP says those runs were the best numbers they saw, letting the engine cool between runs to produce the highest possible number)

The dyno chart didn't show everything I wanted to see though... the plain stock run started logging at about 3800 RPM, the header-only run at about 3200 RPM, and the tuned header run at about 2700 RPM. All three runs ran up to about 5500 RPM. My problem with this is that I'd like to see just how much gain over stock it has from around 2000 RPM on up. I don't really care about peak performance, I care about day-to-day performance. For me, that means gains from 2000~3500 RPM are far more important than gains from 3500~5500.

 

About a week after I installed the headers I installed a Dynomax offroad cat back. The muffler that came in the kit was way to loud and ending up swapping it for a Dynomax turbo style muffler.
Then the Diablo finally showed up and I used the 87 tune, WOW what a change! Felt like it had 50 more HP, then last week I put on a AEM cold air intake. Done with performance mods, very happy so far. The only bad thing as I said was the check engine lights.

 

So with the diablo tune, you are still getting check engine lights? Thought that wasn't supposed to happen?

 

Still happening check engine came on tonight, cat efficiency. Reset and wait 2 weeks it will be back!

 

That sux. Did you let ripp know? Don't think that's supposed to happen.

 

Might do headers instead of forced induction. I have a 2008 auto and hear the weak link is the trans. Dont want to spend 5k and then spend more on a upgraded trans. This might be the only way to go. I bet it sounds nice too