Need some help choosing pump PLEASE

[Arturo]

I asked for advice here and guys told me to put in a new pump and hot wire kit. My question is what size pump and injectors? I also want to buy a th down pipe but dont know were to get one. My 85 is all stock nothing is aftermarket. any help would be apreciated.

 

[redhotrod]

If you aren't going to change the car much from stock other than exhaust upgrades, a walbro 307 will do you fine, but personally, go with the walbro 340, will flow more fuel for when you start upgrading and want to start turning up the boost.
For injectors, if your staying stock, you can send yours out for cleaning and have them flow matched, or go with some 30lbers, stock is I believe 28.5 lbs/hr. But again, if you want to upgrade in the future, get something bigger, but you'll need a chip to match the bigger injectors for now.
The downpipe, I'm not sure if TH makes one for the hotairs, but Mease Performance makes a nice 3" downpipe, and ATR has a nice 2.5" pipe for us too.

 

[GNBeswick]

Id go with the walbro 340 just to be safe, Id get it from www.racetronix.com it comes with the hotwire kit, and is very nice.

 

[cool 84]

Originally posted by GNAsuka
Id go with the walbro 340 just to be safe, Id get it from www.racetronix.com it comes with the hotwire kit, and is very nice.

I agree and the hotwire kit is top notch. I had mine installed in 15 minutes.

Go with the 009 (42.5lb) injectors. They're cheap, will go deep into the 11s, idle smooth, and pass CA emissions. Have the chip burned for them and make sure the burner knows your mods. If you do any signifigant upgrades in the future, you can have another chip burned but won't have to upgrade injectors.

 

[GNBeswick]

Ya, to add to cool 84s post, you'll probably want to convert over to the 86-87 ecm, it makes getting chips alot easier, and if the ECM fails for some reason, they're alot easier to get.

 

[Arturo]

how do i do that

How do i change ecm what all do i need?

 

[GNBeswick]

There is a guide on www.gnttype.org, all youll need is an 86-87 ECM and MAT sensor with its wiring, you can get the MAT sensor and its wiring at www.casperselectronics.com or you can try and find one in a junk yard, your choice.