2011 F150 lariat ecoboost intake, tuner, exhaust
11-12-2011, 07:04 PM
#62
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just picked up my eco platinum yesterday and I'm in the mood for some upgrades. noticed on my stock exhaust and the heartthrob kit, looks like a section of 2 1/2" pipe prior to the start of the 4" pipe. I'm thinking of fabricating my own. why not skip the 2 1/2" restriction and go either 3 or 4" straight back from the front flange??? seems like it would be better to open it up as early as possible rather than the step up.. ?
11-12-2011, 07:16 PM
#63
BAMF Club
^ I think it has to do with reducing the amount of drone. A 4" pipe all the way back is huge for that motor, I think a 3" catback would be great.
11-12-2011, 07:21 PM
#64
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I am thinking the same. just seems like that forward flange would be an easy tie in point. I'll look again tomorrow in daylight but i think it is a straight shot.
11-12-2011, 07:24 PM
#65
Life begins after 20psi
On a turbo vehicle you want the least amount of back pressure possible, so if you had a dump right off the down pipses this would be ideal, but not street legal
11-12-2011, 07:39 PM
#67
BAMF Club
The cats should be before the Y-Pipe... I think you could run a 3" pipe from the Y-pipe all the way back and be set.
11-12-2011, 07:45 PM
#68
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my thoughts as well. in fact, it looks like the final pipe (post muffler) is 3" as well. soooo, I might be able to get by with a 3" connector pipe from flange to muffler and tie in to the 3" after the muffler. that would save a bundle. ??
11-12-2011, 08:57 PM
#69
Senior Member
The pipe is all mandrel bent 4" after the muffler....the hearthrob that is.