What is the first mod that should be done to a stock na 13b motor. Its is a 88gtu

 

By mod I mean, the best one for increasing hp and least expensive

 

First mod to do is use the search button on this site.

Other than that, exhaust and intake.

 

port!

 

Check out the faq threads in the 2nd gen section, with that said is ur 7 in good running condition with full tune-up etc? Might wanna consider that b4 tossing mods at it. And for cheap mods look up throttle body mod w/port n polish, can also port ur intake manifold for a few hp, both are basically free mods.

 

1. cleaning/restoration (water cleaning, replace vacuum hoses, etc.)
2. maintenance/tuneup
3. exhaust system

you have a LOT of reading to do.

 

First thing you should be looking to buy is a good quality header.

 

I always do exhaust and headers first then get ya a air intake clutch radiator and all tht