Measuring exhaust backpressure on stock exhaust and FMSC.

The stock MX-5 exhaust was put on to pass inspection (which went ok). Before I replace it with something more shiny I measured the exhaust backpressure.

Adding some (cheap) sensors for pressure readings.

One of my goals with the AEM Ininity and CD7 was to have better control over different engine parameters. For every step away from OEM we also say goodbye to...

F̶u̶e̶l̶ ̶s̶e̶n̶d̶e̶r̶ ̶u̶n̶i̶t̶ ̶f̶i̶x̶.̶

Update: This did NOT fix the issue. The problem is most likely related to a ECU reflash but not conclusive. I fixed the problem by calibrating it manually to my...

New brake pads and caliper rebuild

After my last trackday in 2018 the pedal felt softer. I thought it was the fluid that was cooked but did not change it as it was already late in...

Pierburg CWA 100-3 IC pump

I just got my new Pierburg water pump that I’ll use on the FMSC instead of the stock Bosch unit. I ordered it from https://tecomotive.com/en/products/CWA100-3.html

Interesting test of aftermarket and OEM ignition coils

I have been following a discussion on alternatives for the OEM NC coil packs on m.net. https://forum.miata.net/vb/showthread.php?t=637421 People running FI starts to see problems ~ 300whp with spark blowout and...

Yey! Migrated site to new platform.

After a lot of work I have finally migrated this site out of blogger.com. Say hello to my new hosting provider:

AEM Infinity parallel install part 1

There have been some interest lately in my AEM Infinity EMS install on my 2006 MX-5  so I might as well make an update.<div class="separator" style="clear: both; text-align: center;"></div><div class="separator"...

Wiring done right with Deutch DTM connectors.

I’m in the process of wiring in an AEM Infinity EMS where I’m creating the harness from scratch.  It’s a parallel install which involves splicing, teeing and cutting misc wires...

New wheels for the street and wheel weight comparison.

When I picked up the old 1.8 engine on the wreckers I also bought some super cheap Mazda 6 2.3 17” wheels.The 16” OEM wheels will not clear the new...

Spare engine

I got hold of a cheap MZR 1.8 out of a 2007 Mazda6 a while ago.I will use it as spare engine so for next season if the 2.5 problems...

Engine rebuild part 9 and beyond..

I just realised I haven’t made an update here since spring.Short story : The 2016 season has been a disaster with less than 2h behind the wheel and what feels...

Engine rebuild part 8: Assembling the bottom end, crank, rods and pistons. Twice of course...

Progress, although things are going slow.- Crank oil holes deburred. Took a lot of work to polish after deburr. No pics.- I received the bearings.The old ones were marked with...

Engine rebuild part 7: Valve lifter adjustment after valve job

The valve job I did earlier changed the valve clearance a tiny bit as it will position the valve further into the seat.  The MZR uses bucket between the valve...

Engine rebuild part 6: Crank finally arrived. Measuring clearances and ordering bearings.

Finally my crank arrived.  Actually the same day I showed up early in the morning and held a little speech regarding customer satisfaction. They used two months and all that...

Engine rebuild part 5: New engine internals and gapping rings, twice...

I received my new shiny pistons and rods some time ago.  The block however wasn’t finished (rebore) until recently after spending 3 months at the machine shop.But now It is...

Engine rebuild part 4: Mazda MZR 2.5L valve job and assembly

My cylinder head needed some TLC after the port job as some of the seats had some minor scratches after the grinding, and I’m pretty sure some of the valves...

Engine rebuild part 3: Porting the MZR 2.5 L5VE head including results

The piston failure on cyl #1 caused a lot of carbon buildup in the ports and on the valve/pocket.  To verify that the head was still in shape I delivered...

How the MX-5 NC cooling system works

The MX-5 NC cooling system can be a bit hard to fully understand unless you have had the engine out.  Lots of hoses going everywhere and some important parts are...

Engine rebuild part 2 - detonation

I took a closer look at the pistons after disassembly in my earlier engine rebuild part 1 post.After a quick session with the brake cleaner on the piston domes there are indeed...