1991 Accord Help------

[liftedoff420]

i just bought a 1991 accord...it has a custom intake and exhaust on it, as well as a custom catalytic converter

my concerns are

1. the car isnt getting the best gas mileage...maybe 20 mpg on city streets

2. sometimes when i start the car when its cold it doesnt catch right away....sounds rough on starts

any ideas? i just did a new oil change and used a fuel system cleaner but nothing really changed..i thought accords got around 25-30 mpg?

[liftedoff420]

o yea i forgot to add....this is an automatic and when i swith gears from neutral, to park, to brake, to d4, etc...its pretty rough...do i need new tranny fluid? it shifts normal while driving though

[integrasedan]

gas milage sounds normal, stick shifts get more milage because they can shift sooner at lower RPMs, therefor using less gas.

also doing mods will cause a change in Air/Fuel Ratio and if the computer can't compensate for whatever reason(weak ignition, faulty sensor, ect.) your gas milage will suffer.