The stock ECU is "safe" but not ideal.

 

Thank you for taking the time to do all this for the community!

 

Chris, I wonder what max injector duty cycle you hit per bank (primaries and secondaries separate)?

 

Sorry if I missed it but what cat is this on?

 

Stock cat, everything on the car is stock with exception to what was mentioned in the first post with exception to the Walbro 255. After that every part that was changed was documented.

 

That is impressive. I wonder what a HFC would do. The most fun I had with my car was similar to these mods but with a hi flow cat. It was a blast, and no problems at all.

 

Yes, this car drives better and handles better than factory thanks to the HKS coilovers, along with having around 100+ more rear wheel power than original. This will be more than enough for our customer. For the past 12 years or so, he had countless visits to the Mazda dealer trying to figure out the LIM gasket issue, so the car was down around 150hp due to no boost. When I gave it back to him last time with the 254rwhp, he was amazed. He will be picking it up this Friday.

 

Curious: How is emissions on the last numbers? CO, Lambda values, HC values etc?

 

We do not have emissions testing in our state. The Lambda/wideband are perfect even leaner than the factory ECU, which is documented in this thread. Everything else we do not test for and do not need to.

 

Great thread! Just read through it and has very useful info for people looking to get the most out of tt and keep emissions for states like mine!

 

No adjustments are needed to the tune after installing the HKS Twinpower?

 

Car was tuned with the twin power installed, see post 52

 

Missed that. Thanks. Would you suggest a new tune to a car that is only adding the twin power? Thinking about getting one

 

In this thread from last month I did back to back testing on just the HKS twin power install. https://www.rx7club.com/3rd-generati...rison-1103125/

As I said there:

Doing that back to back test is actually what gave me the idea for this thread.

 

I'm not sure how Norway's tests emissions test work, but if the stock cat isn't damaged and the airpump/ACV is working like stock with the PFC, all those numbers should be very close to 0 at idle and on the fixed vehicle speed portions of emission tests.

Changing those parts doesn't affect emissions when the engine is warmed up.