Quote:
Originally Posted by jrkiernan
I'm looking to do some upgrades to my 2000 T4R.
I'm looking into an air intake and exhaust. Any other advice.
I had a K&N on my last 4runner but was not completly happy. Short of a super charger what are some ideas?
Also I'm in Cali so I have to deal with smog.
Thanks for any input.
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Sounds like you've got some advice so far and it's pretty consistent with my experience. I've put a lot of time and research (and $'s) into adding more performance to the otherwise lethargic 5VZ-FE.
Intake - The most cost effective power adders are indeed removing the stock elbow or doing the deckplate mod. Is this useable power? No not really, unless you floor your 4Runner on a regular basis. But the gains are there at around 9 HP. Gadget, the owner of URD, has some data to back it up:
Air Induction. If you'd like to do it though, you remove the air box (3 bolts) and if needed, the intake tube (2 clamps). You'll see 2 10mm bolts holding the intake elbow to the fender. Remove these and with a little wiggling, it will pop out into the engine bay. Tada, 9 HP gained.
Exhaust - Someone else hit this nail on the head. The downpipe and catalytic converters are 2.25" piping, smaller than the cat-back exhaust piping. Anything done downstream of the cat does basically nothing. I replaced the muffler on my supercharged engine with a Borla straight through and it did, nothing. Exhaust changes would be for sound only. Headers add power but it's not cost effective at all. For reference, on my highly modified engine I added +30 HP with headers and exhaust. That cost me around $2300.