rx7rcer09

my FD seems to hate cool weather. its like in the low 60's and my car seems to sputter up top. but the other day it was 85 and the car did not sputter any. i ran some stuff called (sea foam) in a tank of gas and i worked wonders on the fuel system i just wondering what could possibly be causing the break up, on the top of the rpms when its cold.?????

MX722

iTrader: (1)

I thought sea foam was basically for when the car is in storage, like winters here in the north.

Could be wrong though

rx7rcer09

its a whole fuel system cleaner and i works good

GoodfellaFD3S

iTrader: (213)

Stock ecu?

Rx72Heaven

iTrader: (2)

im thinking your hitting fuel cut, cause the low intake temps causing you to over boost. get a PFC...

gracer7-rx7

iTrader: (16)

Probably is fuel cut. Fix it by controlling your boost (boost controller and run a high flow cat).

Also check out the FAQ thread to learn more about this topic and your car: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/

Rx72Heaven

iTrader: (2)

Also Port the waste gate if possible.