So here is the link to the previous thread what miata? started about my car and the issues i have been having since my car has been turbo. First with the xede i had the same issue and then installed the ms1v3 parallel and still the same issue.
Here are the mods to the engine:
Ms1V3 with 97 cas
block bored 2mm, to 84mm
lower compression wiseco pistons
h beam carillo rods
shimmed oil pump
550cc rx7 injectors
still on the non return fuel system with a brand new walbro 255
pretty much the main issue with the car is that it wont hold afr's correctly. i make adjustments to the table its fine for a second then goes too lean or rich depending on what i did. This prob has been going on for a while with other management in the car. The xede on it before, I could never get it to run right no matter what I did to the fuel table
The car has had the following tests and parts replaced in hopes of fixing the problem:
-put the ms1 in another 97 ms1 miata and my ms1 worked fine...so it wasnt the ecu
-swapped out factory 99 ecus with another factory one...still the same issue
-put in bigger walbro 255 fuel pump and brand new in tank fpr...still the same issue
-swapped out fuel pump relays...no change
-swapped out 550cc's with a known working set of 550ccs...no difference
-swapped out 97 cas's...no difference
-ran the car with straight fuel line from the pump to the fuel rail...no difference..
-tried changing the tune on the car real time....no difference just causes it to go super rich or super lean when tyring to level the tune out...its either 10 flat or 18.5
-tried the car with the intercooler pipes (turbo) connected and (N/A) disconnected...no difference
-tried using the autotune function to get target afr's and did it three different times....the car still just went to 10 flat on one tune and then on the next tune it ran 18 flat.
IT DID THE SAME ISSUE ON THE XEDE no matter what i did ..i was always fighting the correction issue that the car has
im ready to scrap the car and pull the motor! please
save me from ruining my beauty....