4 Banger exhaust/muffler

[beastlytaco]

yes its true how the intake acts more like a true CAI. the header/ exhaust combo, could maybe work on a bigger engine than the 2.7 but you may be correct. i need to recheck my facts

[jeremiekc]

Please do, I am considering upgrading the exhaust but I would like to know if it improves anything other then just make it sound deeper. I would love it to sounds deeper but I am not willing to loose any horse power over it. It would be nice to find out just what needs to be done to get the best performance out of the 2.7. Have you notice any difference with your Jardine cat back.

[beastlytaco]

my jardine. oh yeah. with the combo of the exhaust and the drop in filter and removal of secondary filter, i have lowered my idel RPMs to about 650 when in neutral. and mind you this is on the 2008 2.7L tacoma. it even is more responsive at the throttle. and you can hear the engine down shifting when i go 30 mph and take my foot off the gas

[beastlytaco]

Originally Posted by jeremiekc

According to chris4x4 and a couple of other guys on here the 2.7 intake is just like an aftermarket CAI. I removed my secondary and put in the AFE Pro dry and had the same numbers as a CAI without the expense. I have also heard that by putting the Flowmaster Super 40 and a Doug Thorley header on it is about the best thing that you can do. For what its worth.

ok heres the rundown. the Flowmaster exhausts are a baffled exhaust. and they are actually more restrictive towards the engine. and chris also says that they can actually screw up the scavenging of the enigne. flowmaster exhausts are more designed for sound than actual performance. so on the issue of headers. look for either a muffler or a complete kit on the 2.7 engine to give you better power with the headers.