View Full Version : do 43# injectors require any other mods.?

10-26-2006, 08:19 PM
i have 43# injectors and my 87 gn runs really rich. tried lowering fuel pressure and got not much change. do you need to put a different chip and or mass airflow sensor when changing injector sizes?

10-26-2006, 08:30 PM
yes .. your injectors MUST match your chip


10-26-2006, 09:18 PM
where is the best place to get a chip? any recomendations

10-26-2006, 11:18 PM
The web sites mentioned are two good ones. There are other sources. (Jay Carter, Red Armstrong, etc.)

Those injectors are 150% larger than stock. Using a stock chip will just cause the motor to be flooded with fuel. A properly calibrated chip is a MUST.

10-27-2006, 10:51 PM
thanks for the input guys. i have a red armstrong pump and chip according to the previous owner. is there a simple way to find out if the armstrong chip is for 43 #r's? can't seem to find a actual website for red armstrong, only a phone number

10-28-2006, 12:18 AM
i would recommend turbo tweak very good chip and its custom made for your car. and pretty cheap... just got one and the car hauls a$$

10-28-2006, 06:13 PM
Look for a decal on the chip, and get the info off of that. Contact Red for the decoding of the decal.