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The headers will give you more performance gain for your money, but will not change the exhaust sound too much. The JoeZ exhaust will make the exhaust noticeably louder/better, and will bring you a performance gain, but not as much as the headers.
Sounds about right...... ;)

The headers alone go for $1,295 and will give you an approx gain of 25 rwhp


~ Average install labor is $500-$600

The exhaust system goes for $1,599 and will give you an approx gain of 20 rwhp..

(more material used to make an exhaust)

~ Average install labor is $100-$150

Combine the two bolt on systems and you are in a very impressive 40-45 rwhp approx. max gains..

These are just some ball park numbers based on various dyno tests using a Dynojet Dyno..

Happy Holidays to All!!!

Joe Z :)
 

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Forgive me if this has been discussed elsewhere (I did search). Joe - any differences for the intake/exhaust 2010 vs 2011 IS-F? The l-tunedparts website does not list 2011 as a choice. Thanks!
No there is not... :D

Both products work perfectly with the 2011 IS-F.

They just haven't updated their site to reflect 2011 (yet).

Best Regards,

Joe Z
 
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