fuel injectors?

[kmak686]

how big are the stock fuel injectors in a 1991 mr2 turbo and if i get a t3/t4 turbo upgrade wut size should i get .also if u have ne input on a better turbo upgrade that would be great. thanks

[TBeck2000]

The stock injectors flow 440cc/min. There probably is not a big need to upgrade your injectors until you are making 280+ rwhp.

The standard injector upgrade is the 550cc from the turbo Supra. You can find a set of 4 for about $130 shipped. You shouldn't just drop them in because you will be spraying way too much fuel and running overly rich.

I think one of the best turbo upgrades is an oldie, but a goodie: Greddy TD06SH - 20g turbo. The turbo won't spool faster than stock, but the turbo is very efficient and will hold full boost until redline. Then again... I'm biased.

Tim Beck
'91 TD-06 Superwhite