Short time lurker, but I figured I'd make my first post asking for help. I've searched high and low seeking ideas on the all knowing internet, and have come up lacking. So I turn to the R3V to ask for help. Here is everything I know about this car.
M52B28 converted to obd1 using m50 harness, throttle body, temp sensors, etc. One thing that has changed since buying the car, I have changed the plastic valve cover over for an aluminum one from the m50, the engine was originally lacking the cyclonic oil separator that m52s come with, and so there was no pcv control at all, that has changed with the installation of the m50 valve cover. I also have coil packs, and all of the other trimmings from the m50, including the correct fuel rail. (the injectors are the 19.5 lb pink tops from the m52) And the air temperature sensor is installed in the intake manifold (m50 intake manifold) And the O2 sensor is before the cat.
The car also has the "fan delete mod" (80 degree thermostat, 80 degree fan switch, clutch fan removed, etc.)
Another item of note Instead of using a harness from turner motorsports, the dual purpose temp sensor was removed, and an e30 temperature sending unit was installed in it's place, then the coolant port further back (that runs coolant to the throttle body) was pulled, and the m50 temperature sending unit (for the ecu) was installed there. Now I know those two are swapped (the ecu should be in the front, and the temperature gauge, I would assume can go in the rear port on the head) however, would there be that drastic of a temperature difference to affect the way the car runs?
Mods: The car has a shorty stainless ebay header, into smaller exhaust piping (probably 2.25") that then in turn is welded into a 2 in 2 out catalytic converter (2.5" piping) then the exhaust piping upon exiting the cat goes back to 2.25" where it is flanged and runs into a 2.5" ireland engineering cat-back.
The car also had a "hot air intake" where the filter was literally laying against the radiator, that has since been moved further away from the radiator.
There is also a mystery TRM chip in the 413 red label dme. I know it cost the owner 250 bones, so I assume it wasn't new, and probably wasn't necessarily made for this car specifically.
The car has been running rich since I got it, I know, because I changed the plugs, and the old ones were BLACK. And I also got my ass beat the other day by a stock e36 328is, with 600lbs of dude in it. (and as they rolled past, they let me know my car was smoking, FUCKKKKK!!!)
So guys, sorry for the rambling, but can any of you help me consider my next route of action? I've cleaned the maf, moved the air filter, finished the m50 conversion, installed what were supposedly s50 cams, lifters, and trays (6 or 7 of the old m50 lifters were dead), rebuilt the vanos unit (beisan systems), have not found any vacuum leaks (there are only like two vacuum lines), got my ass kicked by a stock 328is, and the car seems to idle fine (I think around 8-900 rpm) no searching idle. And it seems to accelerate okay, but what the FUCK is going on with the super richness? Could it be the tune? Could it be the improperly placed temperature sending units? I don't know what to check next.
Thanks in advance, whether you guys fuck with me or not. I'm just at a crossroads for my next action. And the guy that did the motor swap and all did a good job on almost everything, most of the parts were new, just some things are kind of wonky. But I think I've corrected most of them.
Thad.
M52B28 converted to obd1 using m50 harness, throttle body, temp sensors, etc. One thing that has changed since buying the car, I have changed the plastic valve cover over for an aluminum one from the m50, the engine was originally lacking the cyclonic oil separator that m52s come with, and so there was no pcv control at all, that has changed with the installation of the m50 valve cover. I also have coil packs, and all of the other trimmings from the m50, including the correct fuel rail. (the injectors are the 19.5 lb pink tops from the m52) And the air temperature sensor is installed in the intake manifold (m50 intake manifold) And the O2 sensor is before the cat.
The car also has the "fan delete mod" (80 degree thermostat, 80 degree fan switch, clutch fan removed, etc.)
Another item of note Instead of using a harness from turner motorsports, the dual purpose temp sensor was removed, and an e30 temperature sending unit was installed in it's place, then the coolant port further back (that runs coolant to the throttle body) was pulled, and the m50 temperature sending unit (for the ecu) was installed there. Now I know those two are swapped (the ecu should be in the front, and the temperature gauge, I would assume can go in the rear port on the head) however, would there be that drastic of a temperature difference to affect the way the car runs?
Mods: The car has a shorty stainless ebay header, into smaller exhaust piping (probably 2.25") that then in turn is welded into a 2 in 2 out catalytic converter (2.5" piping) then the exhaust piping upon exiting the cat goes back to 2.25" where it is flanged and runs into a 2.5" ireland engineering cat-back.
The car also had a "hot air intake" where the filter was literally laying against the radiator, that has since been moved further away from the radiator.
There is also a mystery TRM chip in the 413 red label dme. I know it cost the owner 250 bones, so I assume it wasn't new, and probably wasn't necessarily made for this car specifically.
The car has been running rich since I got it, I know, because I changed the plugs, and the old ones were BLACK. And I also got my ass beat the other day by a stock e36 328is, with 600lbs of dude in it. (and as they rolled past, they let me know my car was smoking, FUCKKKKK!!!)
So guys, sorry for the rambling, but can any of you help me consider my next route of action? I've cleaned the maf, moved the air filter, finished the m50 conversion, installed what were supposedly s50 cams, lifters, and trays (6 or 7 of the old m50 lifters were dead), rebuilt the vanos unit (beisan systems), have not found any vacuum leaks (there are only like two vacuum lines), got my ass kicked by a stock 328is, and the car seems to idle fine (I think around 8-900 rpm) no searching idle. And it seems to accelerate okay, but what the FUCK is going on with the super richness? Could it be the tune? Could it be the improperly placed temperature sending units? I don't know what to check next.
Thanks in advance, whether you guys fuck with me or not. I'm just at a crossroads for my next action. And the guy that did the motor swap and all did a good job on almost everything, most of the parts were new, just some things are kind of wonky. But I think I've corrected most of them.
Thad.
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