Cx racing turbo kit installed now has rough idle and goes rich after start up
 

Just installed turbo on 92 Miata, currently have stock ecu, stock injectors, wide band sensor. I do plan on purchasing megasquirt ecu, and 420cc injectors. I did first start up it idles fine for about 5 seconds then goes really rich and wants to die. Any recommendations?

Take off turbo kit. Install Megasquirt. Learn to tune. Install injectors, learn to compensate for new injectors. Install turbo kit. Have a great time tuning for boost because you already learned how to do it on a stock motor. Be happy that you didn't blow up a motor using a stock ECU at first.

100% that.

You have to go ecu/wideband, learn to tune, change injectors, tune those and THEN turbo kit.

In that order. Every time, theres no other easy successful way.

Dann

In before blown engine.

How are you going to make sure you have the right amount of fuel in boost? Stock ECU does not support that.

420cc injectors on the stock ecu and it idles pig rich?
I havent a single conceivable idea why.



Did you try researching....at all...?

if he did any research, he wouldn't have bought a cxracing kit.

like others have said, you need megasquirt and injectors. Stock ecu can't run a turbo. You will blow up the motor. Very....quickly.

y'all postin in a troll fred

Who you calling fred, fred?

Well, not to knock the kit, Have it running on my 90, not using their manifold of course but had absolutely no issues so far. HOWEVER....like others have stated, you've created a bomb that you have no way of controlling. if youre really wanting to run it use vvt 265 injectors, use the stock ecu, with a fmu. BUY A MEGASQUIRT. Pm me if you need help tuning. certified efi tuner here.

who are you certified by?
on which systems?
how many megasquirts have you tuned?

Seeing you post that you prefer speeduino over megasquirt in the other thread and then seeing this made me laugh.

prefered speeduino for the pure open source nature, still running my megasquirt though ;) tuned roughly 30 megasquirts in my area, went to hpacademy online and did a haltec program. fluent in megasquirt, aem, holly, motec and some others.
but thanks for the test ;)

that wasn't a test, it was a simple question. I hope you don't think I'm impressed, I get amused when people throw out "efi certified" and "fluent in" which is the rough equivalent of "jack of all trades, master of none".

anyways, carry on.

Are you certified? Didn't expect anyone to be impressed by me doing my job lol. However I understand how loosley the words "certified" are thrown around.

BUTTT back to OP, either buy the ecu or put smaller injectors in and run low boost and pray you dont blow your stuff up. You've been warned. GL

Just run all of the boost you can and make a few real good hard pulls. Please record a video of the results and post here when done.:x:

I'm certified in spelling Holley correctly.

Wholly cow!

:laugh:
you're proving my point flawlessly, thank you.

Are you one of those people who pays more for a "certified pre-owned" car? Because that doesn't mean anything either.

"We have certified that this car is, in fact, used."