Turbo Miata experts in Phoenix?
#1
Turbo Miata experts in Phoenix?
here. Just bought a '90 with what appears to be an old Begi kit. Has the airbox for a flat filter, small FMIC, and tiny Turbonetics turbo.
engine bay pic...
I am not new to turbos (have a 3000GT VR4 also), but am a complete noob to miatas. Spent quite a bit of time searching on here already just familiarize myself.
Started poking around under the hood and found out that my FMU was not hooked up to vacuum (only boost) so idle fuel pressure was high. Prob not a big deal but fuel purge valve, by canister in engine bay, was missing one vac line. Fixed that also but makes me wonder what else is not correct. By the way, I already have an AEM wideband that I need to get installed.
I do not see any form of ignition controller. Haven't checked base timing yet. Only running 5lbs and don't notice any timing pull from knock while doing a pull, so hopefully no damage done.
What is this or what was here??? There is the black connector, plus you can see that two other wires (white/red, black/white) have been tapped into at some point...
Any turbo miata experts in Phoenix area want to help look over my car with me and point out what needs to be done and/or purchased to make this reliable and more boost friendly?
engine bay pic...
I am not new to turbos (have a 3000GT VR4 also), but am a complete noob to miatas. Spent quite a bit of time searching on here already just familiarize myself.
Started poking around under the hood and found out that my FMU was not hooked up to vacuum (only boost) so idle fuel pressure was high. Prob not a big deal but fuel purge valve, by canister in engine bay, was missing one vac line. Fixed that also but makes me wonder what else is not correct. By the way, I already have an AEM wideband that I need to get installed.
I do not see any form of ignition controller. Haven't checked base timing yet. Only running 5lbs and don't notice any timing pull from knock while doing a pull, so hopefully no damage done.
What is this or what was here??? There is the black connector, plus you can see that two other wires (white/red, black/white) have been tapped into at some point...
Any turbo miata experts in Phoenix area want to help look over my car with me and point out what needs to be done and/or purchased to make this reliable and more boost friendly?
#4
Boost Czar
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Location: Chantilly, VA
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tkae a picture of the turbo. I bet it's an old aerodyne turbo.
This is not a problem, the FMU only really does anything in boost, the stock fpr needs vacuum to reduce the fuel pressure at idle.
probably had some sort of ignition retard device on it. the whte/red wire is 12v, black is ground, and that white wire is the crank signal.
Started poking around under the hood and found out that my FMU was not hooked up to vacuum (only boost) so idle fuel pressure was high.
What is this or what was here??? There is the black connector, plus you can see that two other wires (white/red, black/white) have been tapped into at some point...
#7
Agreed, but the FMU is already on the car. Just trying to keep it simple for now. I already have a twin big 16G, AEM EMS, E85, dual aeromotive 340's, 3000GT project car that is sucking me dry Trying to give the miata a safe tune and somewhat reliable. Supposed to be just a fun weekend car with wife or a go-cart to go to store with one of the three kids.
I may consider Megasquirt if the costs for it, all sensors, and bigger injectors aren't much more than what I need to add on piggyback style.
I'll probably throw an ignition retard on. Looks like Bipes is the way to go, correct? Probably shouldn't be driving it until I make sure base timing has been set lower until I get a MSD or Bipes.
Thanks for the help so far guys! Still hoping to find someone local to look it over for an extra set of eyes.
I may consider Megasquirt if the costs for it, all sensors, and bigger injectors aren't much more than what I need to add on piggyback style.
I'll probably throw an ignition retard on. Looks like Bipes is the way to go, correct? Probably shouldn't be driving it until I make sure base timing has been set lower until I get a MSD or Bipes.
Thanks for the help so far guys! Still hoping to find someone local to look it over for an extra set of eyes.
Last edited by familyMAN; 08-05-2011 at 12:29 PM. Reason: formatting
#11
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,020
Total Cats: 6,588
The white / red wire is the +12 supply, the white wire is the CKP (Crankshaft Position) output, and I suspect that the wire you describe as black / white is actually black / light green, which would be the ground.
I suspect that there was an ignition retard device spliced into it at one time.
#14
welcome to the forum man, i love off of the 51 and 101. Hit me up if you need anything. If you just want to keep it running without really going all out just get something to retard the ignition and get a safe tune on there. I know a few people at UMS that may be able to help
Also if you looking for a local non-car specific forum with a bunch of cool dudes check out www.teamv-locity.com
pics of vr4?
Also if you looking for a local non-car specific forum with a bunch of cool dudes check out www.teamv-locity.com
pics of vr4?
#15
Some of these pics are without spoiler. I was fixing the active aero motor at the time. VR4 suspension/wheels are completely stock. Has 4x4 look going on...
VR4 is currently out of commission with a spun rod bearing. Gathering parts for a forged rebuild, big turbos and E85. Already have forged crank, twin EVOIII 16G kit, AEM EMS, dual pump/dual feed fuel system (aeromotive 340 x2, Stainless lines, FPR, and billet rails.) Just need rods, pistons, clutch, and 1000cc injectors. Shooting for 600+awhp and 600+awtq.
VR4 is currently out of commission with a spun rod bearing. Gathering parts for a forged rebuild, big turbos and E85. Already have forged crank, twin EVOIII 16G kit, AEM EMS, dual pump/dual feed fuel system (aeromotive 340 x2, Stainless lines, FPR, and billet rails.) Just need rods, pistons, clutch, and 1000cc injectors. Shooting for 600+awhp and 600+awtq.
#16
welcome to the forum man, i love off of the 51 and 101. Hit me up if you need anything. If you just want to keep it running without really going all out just get something to retard the ignition and get a safe tune on there. I know a few people at UMS that may be able to help
Also if you looking for a local non-car specific forum with a bunch of cool dudes check out www.teamv-locity.com
pics of vr4?
Also if you looking for a local non-car specific forum with a bunch of cool dudes check out www.teamv-locity.com
pics of vr4?