***X Pipe: power loss/gain***

Airfrcd · #1 07-03-2010, 12:07 PM

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Airfrcd · #2 07-03-2010, 12:10 PM

Please post your observations as to whether an X pipe has increased or reduced your power output, whp/wtq.

I am contemplating installing an X pipe on my 4.8iS for increased decibels, but don't want to sacrifice power.

Thanks for your opinions.

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e53x54.4 · #3 07-13-2010, 05:49 AM

well on my 4.4i with the x-pipe i noticed a stronger mid-top end the low end feels the same...and its not too loud but i want to get billy boat mufflers for my car =)....i love the sound

jst2878 · #4 07-13-2010, 07:51 AM

Change of sound, nothing else to be lost or gained.

dpgx5 · #5 07-13-2010, 07:55 AM

I emailed hartge to ask if they claim any gains with the x-pipe i got.
he replied 5-6 hp... i will be installing when i return from my vaca.

LeMansX5 · #6 07-13-2010, 09:59 AM

Quote:

Originally Posted by dpgx5

I emailed hartge to ask if they claim any gains with the x-pipe i got.
he replied 5-6 hp... i will be installing when i return from my vaca.

5-6 hp gain with X-pipe install? I have heard of negligible loss.

CharlieHustleX5 · #7 07-13-2010, 02:32 PM

I wouldnt know if there was a loss but it doesn't feel like it on my 3.0

TowX · #8 07-13-2010, 03:20 PM

Lost lots of low end torque with x-pipe on my 4.4. There was what felt like a gain at 4000+, but I tow my trailer at 2500-3500 rpm and couldn't afford to lose that low end grunt. Swapped to straight pipes with an H between them and gained all my torque back.

NYCSterling · #9 07-13-2010, 04:01 PM

If the Xpipe is such a good thing, why did the BMW engineers miss that configuration in their design of the exhaust? I think they would know whats best suited for the SAV. Just my $.02

CharlieHustleX5 · #10 07-14-2010, 09:36 AM

Quote:

Originally Posted by NYCSterling

If the Xpipe is such a good thing, why did the BMW engineers miss that configuration in their design of the exhaust? I think they would know whats best suited for the SAV. Just my $.02

Well I cant answer your question regarding BMW engineers, but here's a snap of the Hartge connecting pipe replacement piece for the e53's equipped with the 4 Liter motor.