|
2 1/2" is on the larger side of exhaust pipes for the 3vze. Increasing your exhaust pipes just a 1/4" in diameter adds 23% more volume to your pipes if they are all the same length roughly. That's 23% more volume that your exhaust gases must remain hot in to move. As soon as they cool they start to slow the flow which hinders exhaust flow and works against your engine. But when you rev the piss out of it you are getting more exhaust pulses which starts to move the exhaust again.
__________________
1993 Xtra Cab Pickup | 4x4 | 3.0 - V6 | R150F | Silver-Grey | Amsoil 10w30 synthetic oil | Amsoil Synthetic Drivetrain fluids|
Borla Cat-back Exhaust | OME HD Leaf Springs | Bilstein HD Shocks | Downey Idler Arm Brace | Grey Husky Liners | SR5 Bucket Seat Swap | Color matched Canopy | Yakima racks | Line-X OTR | Michelin LTX A/T 31 x 10.5 x 15 | 323,600 KM's (202,250 miles) | Made in Japan - Vin starts with "J"| Fish on
|