TPS sensor was reading weird. engine was running rich and things were just off. But... the hunting during warm up seems to have disappeared. charge pipe was off.

TPS corrected, injector flow data updated, ( I mis read Injector Dynamics info...oops) and charge pipe connected.

that said my issue that I had with the NA upper intake manifold and the air intake temperature seems to be greatly diminished , comparing the logs from two years ago to now. I'm just so happy, I thought I'd share with everyone in it's own thread.

 

Sounds terrific! What's next?

 

Congrats! Your car is awesome.

 

Next up is a driveshaft, I think I’m going carbon fiber.

 

"It's Alive!!!"

Hope she goes as bad *** as she sounds.

 

I briefly drove it two years ago. Even babying it with a fresh rebuild, I couldn’t get out of first fast enough. It really wanted to go.

 

Let me know how that goes for you, I have always wondered how those felt vs stock.

 

My intention is to order late February

 

Sounds great!

 

The engine sounds fantastic. I wouldn't worry about the idle at this point. It may need some minor adjustments and or the gas may be a bit stale from sitting if it was left in the tank. I'm confident that it will clear up and will only get better from here. Its absolutely incredible!

 

Engine is sounding great! Can't wait to see this thing on the road at some point. Stellar work!

 

I’ll just sneak this in here as well for now. 😎

 

Looking good, can't wait to see this build on the road!

 

do tell ! the driveshaft on my car has always hit the parking brake cable bracket. I've tried new shocks and springs, and washers on the driveshaft mount bolts.

I want to go with a small diameter drive shaft? is a carbon fiber's diameter smaller.

I'm tired of trying to find OEM used replacements.

 

The Q1A CF driveshaft is 2.25" diameter. I believe the OEM is 2.6". The U joints are definitely beefier, with the new setup. Fully dressed, the weight is 10lbs for the CF. The OE FB driveshaft ia 12 lbs. A T2 driveshaft weight in a 14lbs. But it is also shorter than the FC driveshaft. So I'd guess a steel T2/FB driveshaft would be about 16lbs. So lets say I saved 4 lbs over that mazdatrix option. To be honest, I was hoping for a greater weight savings. The muscle car goes have better returns on a CF driveshaft. Yet, as I understand it, CF smooths out or reduces drivetrain shock. and if it does fail, I don't risk totaling the car. Im still up for the winter, but i do a review on this and many other things this spring.

 

I considered carbon fiber for my driveshaft many years ago (turbo Cosmo 13B in an FB) and decided against it for the cost/benefit. I went with a 3" dia aluminum driveshaft instead, which has worked very well. A driveshaft, by its nature, has a very low polar moment of inertia (its mass is very close to the central axis), so reducing weight doesn't yield much performance gain. The highly useful benefit is the ease of achieving good balance at high RPM with a 1-piece unit -- the lower mass of the rotating components makes it easier it is to balance.

One downside is susceptibility to damage. If you cause significant structural damage, a CF driveshaft will self-destruct in spectacular manner -- lots of black furball, with little collateral damage, which could be considered a good thing for the rest of the car. Steel and aluminum are more forgiving to damage, but more destructive if they fail.