rotary tuning with megasquirt quick lesson

Showing the capabilities of a home made standalone system designed and marketed as megasquirt controlling a turbocharged rotary powered vehicle.

Car used mazda 1988 mazda rx-7 with some modifications done to engine.
1600cc sec injectors and 680cc primary injectors, running on pump gas.

tuned by mperformance in Panama city, Panama. Please beware of imitators and beware of USED megasquirt units. WE are not responsible for damage to your engine, car or loss of life due to failed and badly assembled units.

Please check out this video to quickly learn about tuning a wankel.

Category:

Autos & Vehicles

Tags:

• megasquirt
• mazda
• rx-7
• turbo
• mperformance

[mperformancerx7]

Actually no... You are right. I was answering your comment from my phone. In this video yes its way lean. Popped an apex, thats why Im redoing it. Never run a rotary lean after changing a compression tube. The map was too lean at high boost. Thanks for watching. Im uploading some more videos the car is getting a rollcage and a new motor.

[mperformancerx7]

Yes its actually normal for it to do that.  That was a couple of years ago. Car is getting rebuilt at the moment, it ran very good for 2 years with that tune. As soon as I installed a compression tube and fixed some install issues we popped an apex seal because AFR went to 13s at 10.5 psi. With a big compression tube it made the old map very lean at highboost and did not tune it right away. I am doing another motor and will tune it properly at dyno to avoid lean spots.

[mperformancerx7]

it´s nice to see another fellow megasquirt user. We are rebuilding this car as I write this. Getting some new apex seals, new housings and new paint! 

[mazpr2025]

I love the rotary sound, so freakin addictive.

[snaple07]

Did you have to modify the CAS along with the coils, I've got a MSIII V3.0 with stock cas and coils, but my car doesn't receive a signal from the cas for continuous spark. Is this a problem with the coils, CAS or ems?

[TheMechanicalGuy]

at 8:20 ish where you blipped the throttle the wideband on the MS dropped way down. Does that mean you leaned out when you hit the gas?

[JCredRX7]

I also have a 6-port 1987 Mazda RX-7 converted from NA to T4 turbo and am using MegaSqurit 2.0. My turbo re-enters the manifold on the opposite side that yours does, so I have some more elaborate intercooler plumbing. It uses a 50mm wastegate and legitimate Blitz blow-off valve. I also run a Koyorad radiator and it runs nice and cool. The engine was rebuilt with an S5 center iron and required a custom block-off plate for the header and 3" stainless steel exhaust. Keep in touch Jon Bixby -NY