Just checked and looks like my reg/smog crap is due in December, which means car is going back to 100% OEM next week and getting smogged, then TIME FOR BEWST

 

HAHA commifornian.

 

Oh man, that must be annoying. Glad you are getting it done now so you will have plenty of time to build, enjoy, and sell the car before its due for smog again

I'm kidding. I hope you keep this one longer.

 

Well the stupid thing is only every 2 years, so its not as bad as the yearly inspections some states have.

 

At least it gives you the opportunity to do some maintenance that you'd otherwise be too lazy to do since it's too much hassle otherwise (eg. I give the intake manifold a cleanup when I change injectors, no way would I bother doing that if I didn't already have to take the manifold off).

 

Yep, basically.

Well the car is completely back to stock as of 10 minutes ago. Only thing left on it is the dw200 fuel pump.

And I think its overwhelming the fuel system :/

Makes a SUPER LOUD squeak/scream sound on decel, and it seems to be coming from the fuel rail area.

Also car seems to be running super rich at idle, or at least rough. So yeah, if it doesn't clear up in a few miles, the dw200 is coming out as well. Hopefully will get it smogged tomorrow or something.

 

How was your fuel system setup before today? Looks like my 200 is staying in the box a while longer

 

I was running the ID1000's and e85

Its weird cause I had the wally 255 in my previous miata when I smogged it and it was fine, and this thing is supposed to pump/flow the same. And I can't think of anything else being problematic because car is otherwise 100% stock and everything is in tip top shape.

I"ll look everything over yet again tomorrow and probably swap the pump too.

 

I realize it's more money, but would you be able to rectify the situation by purchasing a decent aftermarket AFPR and not remove the DW200? May not be a bad idea to have anyways

 

Well,
aftermarket means converting to return style, which means I won't pass smog in CA, which is the only reason I swapped everything else back to stock for the next couple days in the first place.

So no. At least not for this purpose. If I need it when I'm boosted its definitely a possibility

 

Hmm i wonder if you can find some NA parts that will pass for stock to the inspectors eyes?

 

He needs the stock ECU, stock injectors, stock rail, stock lines and the stock 60psi fuel pressure to keep it all happy. Anything that even remotely looks non OEM will get you failed on a visual.

I've been trying to figure out how to do this and keep it all OEM looking, but I'm not having a lot of success myself. I'd be tempted to try and smog with a return system running 43.5, but would need 300cc~ish injectors to make the factory ECU stay in range.

And people wonder why we tend to do things the hard way on this coast

 

Yeah its just not worth the hassle. I will swap the pump tomorrow which should take like 20 minutes, and hopefully its all happy with the stocker, then go drive the daylights out of it, then go straight to the smog place.

If all this goes without hiccups I might be swapping the built motor in next week. So excited

BTW car feels significantly slower now, so that means the e85 and my tune was actually effective

 

Ok, update time:

Its 1am but I couldn't sleep so I went back to wrenching on it lol

Replaced the fuel pump back to stock, take it for a spin around the block: still same crap

So not fuel pump.

So then I tear back into it, yank the mani and fuel rail, everything is tip top no issues. So I replace the fuel rail with a spare one I had, just in case, and triple checked that the injectors were seated properly. Put everything together and,

voila, it runs like a champ

So either:
- Something is wrong with this fuel rail (this is a different one than I was using with the ID's and e85 that I just took off)

or

- Somehow one of the injectors didn't seat properly and there was a massive vacuum leak.

Oh well, I don't care. Its all good now and I can go back to sleep

 

Ok, I was going to say, I'm running a DW300 with an otherwise completely stock fuel system and it runs just fine.

Good luck with your smog check

 

Sorry to hear about the extra trouble, but glad you figured it out. At least miatas are really easy to work on.

Now to smog this bitch and shower it with parts.

 

Makes me happy I moved to a part of Utah that doesn't require smog/emissions.

I miss Idaho and its $25 registration fee. They don't care about anything besides that.

 

I know you've got it running well now but you could always run an aftermarket regulator like FM does, near the tank, and keep it returnless.

 

hmm, got a link to that? sounds intriguing

 

yes, please, go on.