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So, back in 2016 I had to get rid of my MS3. Always wanted a rotary and never really saw the opportunity financially to pull the trigger until then. Fortunately the wife is just as nuts as I am and pushed me to get one regardless of how bad a finacial decision it would be. So, I picked this 1993 FD up back before pricing shot through the roof.
Was in decent shape, paint was faded, typical 5th gear synchro failure. BUT it had a freshly rebuilt keg with Goopy apex seals, so that was a plus. Picked this up on facebook marketplace. 99k on the chassis - pics from the listing
Since ive had it, a lot of time has been spent going through the car ensuring everything is working properly and addressing everything around the engine before going for power.
I hate electrical so i keep waffling on the harness. Its a big nut and I want to get it right the first time. Guys at LMS-EFI have been very patient with me. Still on the fence about leaving provisions for e85 (not much in my area) and EGT sensors....
In the interim ill be trying to dress up the engine bay as best i can
Last edited by Mr Dangly Bitz; Dec 1, 2025 at 09:28 AM.
What did she make on the stock twins? My cars going together now on stock twins but a beefed up fuel system so I can max them out, hoping for 300+!
Jealous on your single setup, I considered but it just wasn't in the cards. I figured I'll break in the new motor and enjoy it next year, and hopefully if everythng goes well I'll be following suit with a turblown kit next winter!
Those mustang wheels were wild lol. Good work so far and going with a new trans was a great decision. Build the harness with everything whether you use it or not. If one day your situation changes, it's the biggest pain to add the stuff later. If you FEEL you MIGHT want it one day, add it.
Hopefully you are premixing somewhat heavy with those goopy seals. You shouldnt be relying on the omp for anything.
What did she make on the stock twins? My cars going together now on stock twins but a beefed up fuel system so I can max them out, hoping for 300+!
Jealous on your single setup, I considered but it just wasn't in the cards. I figured I'll break in the new motor and enjoy it next year, and hopefully if everythng goes well I'll be following suit with a turblown kit next winter!
Subbd!
325whp/300wtq -ish
on IRP's mustang dyno: with a stock second cat
New tuner - Waynespeed after the cat broke up and clogged the exhaust, hollowed it out and reinstalled
Those mustang wheels were wild lol. Good work so far and going with a new trans was a great decision. Build the harness with everything whether you use it or not. If one day your situation changes, it's the biggest pain to add the stuff later. If you FEEL you MIGHT want it one day, add it.
Hopefully you are premixing somewhat heavy with those goopy seals. You shouldnt be relying on the omp for anything.
I am, .5 oz/gal with the OMP
The drive back to NY on those wheels with rotted tires, was white knuckling for hours. couldnt give the wheels away.
Last edited by Mr Dangly Bitz; Dec 1, 2025 at 11:18 AM.
Hopefully you are premixing somewhat heavy with those goopy seals. You shouldnt be relying on the omp for anything.
What premix ratio do you recommend on them? My fresh build is using them as well. If it were up to me I might have gone a different route, but they are what came in my built keg so I'll be running em.
Originally Posted by Mr Dangly Bitz
325whp/300wtq -ish
Nice! Why was the setup boring? Just not enough power? My Miata makes 315whp and is a rocketship, so I'm hoping the stock turbos don't bore me to death on the FD.
Nice! Why was the setup boring? Just not enough power? My Miata makes 315whp and is a rocketship, so I'm hoping the stock turbos don't bore me to death on the FD.
The stock fuel setup was giving the tuner trouble at the top end, so he limited the IDC to 85%, which lowered redline to 6K for safety.
sucks when you get that kick from the 2nd turbo for a second then have to shift.....and lord knows id never get that rats nest back together after upgrading the injectors. so, i just ripped it all out when i did the fuel setup. saved a ton of aggrivation
the factory harness is also shot, so rather than spending on a new OEM style and then buying another again later on i just decided to bite the bullet
Yah I love building harnesses too for RX-7 BTW lol. LMS EFI does a great job as well!
This type of stuff just makes me nauseous. I have a bad habit of being very detail oriented and organized for the first 5 minutes, then it devolves into chaos. Would never trust myself with this kind of thing
I got the fuel side of the engine complete. pretty straightforward. broke one of the baskets on the primary injectors but was able to suck it out with a shop vac
OMP lines are nice and soft, so at least thats one less thing to replace. Now its just a waiting game for the rest of the parts.
Poor dog thought we were going out to play
Last edited by Mr Dangly Bitz; Dec 12, 2025 at 06:36 AM.
Looking good! Those plastic fuel diverters can be a PITA! I kept stock primaries on my car and went with the rotary performance rail that let me keep the stock FPR and was happy to get rid of them on my secondaries. I would have gone the same route as you but I had to stop the bleeding on my rebuild somewhere!!
So not much of an update, parts are slowly starting to trickle in.
Got my intercooler kit in, Pettit added a few goodies for the delay, they had to wait and get the new turblown intake elbow to fab up the last charge pipe connection. they threw in a billet oil filler cap and some other goodies which was nice. pretty beefy at 17x12x3.5
Also got the turblown cast aluminum intake elbow. looks like a solid piece.
Got bored and decided i wanted to go black with much of the engine bay, not really a polished/raw/chrome person. So whipped out the rattle cans and sprayed the upper manifold, throttlebody and elbow all satin black after blocking off a bunch of things.Going to do the charge pipes and core end tanks next.
sakebomb ignition kit is in the mail. so that will be next. Going to mock up the core and see if i can fit this antigravity battery somewhere in the engine bay so i dont have to run cables all the way to the trunk.
Trying to finalize the wiring harness so I can get that on order. Was doing some digging on the gas tank purge control solenoid. Im guessing mine was shot since it was always pressurized whenever I went to the gas station. Can I just run it directly into one of the ports on the manifold with a check and skip the solenoid all together?
Decided to add EGTs to the harness so the tuner can balance the fuel ratios per rotor, saw some things online about the rear running slightly richer than the front. just a good data point for tuning i guess.
Last edited by Mr Dangly Bitz; Jan 21, 2026 at 07:08 AM.
well i think ive officially bitten off more than i can chew at this point.
Got the JP3 battery post installed but it seems to ever so slightly be in conflict with the new intercooler, may cut it down or tap a new hole in the rail. In the meantime i plan to mount the battery in the old airbox area, helps mitigate the wiring to the back of the car. going to 3d print a bracket to receive the jp3 battery tie down, then mill it in aluminum if it fits in my desktop cnc.
some more parts have trickled in since the last update:
replacement oil filter pedestal with provisions for oil press and temp sensors
fuel pressure sensor for the new fuel rail
new bosche knock sensors
and finally the new harness.
Harness is scaring the **** out of me for some reason. mostly because i hate wiring, but more for the fact that it doesnt look like a 1 for 1 replacement. ive read the wiring diagram 15 times and still am not comfortable, but i think thats just me getting in my own head
only parts im waiting on at this point are the turbo kit and the fuel pump........
So.....made some decent progress this weekend, my hands and back are killing me...getting to old for this **** without a lift
Saturday was spent pulling the LIM, turbos and manifold.
Installed the new oil filter pedestal with pressure and temp sensors. needed a few more elbow and finger joints to get some of those nuts in..... temperature probe conflicts with the banjo bolt that feeds the filter, so ill have to get an adaptor to get the sensor to fit.
LIM gasket was delaminating, so I ordered a new one of those, and the UIM gasket while i was at it, also got an FC filler neck to delete the AST
Replaced the oem fuel temp probe with a pressure sensor so the ecu can directly monitor FP and cut the car if something goes sideways.
Painted it so it doesnt look nearly as trashy. Downpipe had one stud that refused to come out. Torches, sawzalls and hammers took care of that
Turbos came out pretty easy. lots of layers between the heat shielding an actuators to actually get them out. Thought they were in good shape until i flipped them over and saw the hotside. the cracks are DEEP Sunday was spent on the electrical side
Pulled the last few sensors off the gearbox, loosened the ABS pump and had just enough room to pull the old harness out
New one went in from the inside so the wife helped with the whole push pull thing until it finally made it in. With these now out of the way the only thing im waiting on is the turbo itself which is en route (wednesday supposedly). Once i get it ill take off the turbine side and send it, the downpipe and the manifold off to be cerakoted
Hopefully after that i can start putting things back ON the car instead of taking them off.
Last edited by Mr Dangly Bitz; May 18, 2026 at 09:15 AM.
Took some time yesterday to pull the turbine side of the turbo off and sent it, the manfold and downpipe out to get cerakoted
Started to dress the wiring harness. probably going to pull it and rerun a few lines but making some steady progress
Got a few new parts in from atkins rotary, new gaskets, filler cap with vent to delete the AST, exhaust studs etc so started to install those along with a McMaster carr order for some vacuum and coolant caps.
Knock sensors are next, still a few plugs im not sure where they go yet. Also trying to find a place to shoehorn the battery so i dont have to run lines all the way back to the trunk.Looking at the airbox location as a potential contender
Not much this weekend, still high on gasoline fumes
Installed the knock sensors and got them wired, got an ORB fitting and relocated the oil temp sensor in the pedestal as it was in conflict with the banjo bolt connetion
Massaged the harness around the engine bay, got the positive and negative terminals completed on the harness
Pulled the fuel hanger assembly, 6 of the 8 bolts stripped out and had to be drilled.....now i need to tap the tank so I drained it in preparation
Installed the new Walbro 460 pump in the hanger. ordered a stepper drill to install a new bulkhead electrial connector and some pinout tools to remove the old power supply via the existing 4 pin connector as it wont be used, need to keep it for fuel level sensor
Garage still wreaks of gasoline, leaving the doors open for a while
Hopefully the cerakoting is done this week, in the meantime its finally time for some permanent assembly. Going to reinstall and wire the LIM, UIM and TB sections, finish the AST delete and secure the harness somehow. Then install the resonated midpipe and wire up the fuel pump
Battery is the only variable at this point....and a tuner
