My car started to bog when the engine is cold after I completed my Greddy Header install. I've read that the relocation of the O2 sensor from the runner area to the collector area causes the O2 to give an inaccurate reading. I want to get something to tune my car. My car is OBD0 PR4, so no Hondata.

Zdyne. $295. How do I tune?
SAFC. $295. Not as robust.
Ghettodyne/DIY. Anyone have experience?

Recommendations and comments please!


Dan

P.S. 90 teg ls w/ new ngk plug/wire/fuel filter/O2 sensor/cap&rotor.