Hello, I have a 1995 1.8l miata and was looking into getting FI. I saw the BTP turbo kit, but keep reading horror stories on fitment and sketchy carb kegal issues. My power goal is 200WHP, while staying carb legal. I also saw the FFS kit and this seems like the best route. Has the BTP fixed their issues or should I just go FFS and call it a day?

 

FFS is the only option truly legal option.

 

Its spelled kegel.

 

BTP isn't actually CARB legal, so that sounds like an easy choice.

 

FFS is a legitimimate company that will ship you a fully legal kit that passes smog in California.

After tuning a BTP equipped "smog legal" kit in California on a 1.6 car, I cringed at the thought of what would happen if a smog station (especially a STAR one, likely due to the age of the car) was to inspect the car.
The owner quickly sold the Miata and bought a Skyline R32 after fighting with the issues he was having about four months later.

Be smart. Go FFS.

PS. If you are familiar at all with that CARB legal means in California, the first red flag here (after BTP) is the fact that the kit was being tuned. You cannot just send someone a Megasquirt and say "that's OK, that falls under THIS item number from the original EO".

Who ended up getting the short end of the stick?
Right. The customer who couldn't pass smog with his "CARB legal" kit.

 

Thank you guys for the replies. I appreciate it.

 

I'm on the same boat as you. I have a 1995 Miata and wanted a CARB legal turbo kit but there really isn't any out there. Supercharging was the only CARB legal solution otherwise you would have to pass smog illegally or go back to stock every two years before undergoing a smog check.

 

Let me just help with the decision making process if you decide to go this route.

MK Turbo or TSE kits will be the proven solutions, especially if CARB is a non-consideration for you.

 

Thanks! I have looked at MK Turbo and it looks like a good budget solution.

 

If you check out Sonofthehills build thread you can read about how he deals with emissions in Cali when running my turbo setup.

 

Thanks, that will be useful for me in the future.

 

The Bell NA kits are actually legitimately CARB legal if you use them with a rising rate fuel pressure regulator. Not that you want to do that, but it does conform to the EO.

It's the 99 kits that are questionable due to deleting the pre-cat (because no special 99 manifold any more) and games with the "timing retard device".

--Ian

 

Which one of these two is that?

https://www.belltuning.com/na-nb-mia...o-systems.html

 

Presumably the BTP-S on a 1.6 with the "no fuel" option and a rising rate FPR installed instead.

 

There you go, OP.

Sell your car, get a 90-93, buy a kit, change some things, and hope that you can skate through and that paperwork is in order from the transfer between the two separate companies. :lol:

 

Honestly that is an interesting question as to who the CARB EO follows. It was originally setup by Begi which no longer exists. There is Bell Tuning and MaxG. Both separate companies, both from Begi. No clue which one actually has the rights to the CARB EO and making a setup that passes.

 

I think the EO is considered a business asset, as with other intellectual property, and ownership is specified in the contracts that split the business.

--Ian

 

This just came out for all you CARB legal folks.

https://www.flyinmiata.com/stage-1-turbo-system-na8-chassis.html

 

GD it, FML and my CA-spec NB1. I need Nelson to kick me in the *****, point and laugh.

Time to buy an NA.

 

They have a carb legal version of every generation...