dang.

this weekend i fitted my 4-1 manifold to my car. upon driving the car off the ramps and driving 1 mile i got a cel when engaging vtec ?

so i went back and it flashed up o2 sensor. so after removing the sensor and checking it over again i took it out and again as soon as i toutched vtec i got a cel again!

this time it threw codes 5/17/43.

so i re-set my ecu, took it out again just to re-confirm the codes. now the cel came on when i was not in vtec (i was in 4th gear at 2500 rpm)

so i tried to pull the code up and now if refuses to flash at all :?

i have tried it a few times and i get sweet f.a back, it refuses to flash yet when driving it the cel light still comes on.

im stumped as to what the problem is. the ecu is from a delsol vtec (b16a2) with a p30 -g00.

ideas or has anyone experianced this before?

also when the cel comes on when rolling to a stop the car drops idle to about 100 rpm for a second then jumps back up to 700ish. its the same when it is rev`ed at stanstill with the cel on?

heeelpppp!