so i had a misfire on cylinder 2 (cobb unit) i decided to change the spark plugs after that was done i hooked the battery back up and the car started up just fine, i let it idle for a few minutes and slowly reved it up past 6k after it was warm. I shut the car off for a few minutes and went to take it for a spin and it starts then just bogs down. I cant start it

the spark plug install went very smooth and it started no problems after i did it and my car never had a problem with starting before

update)i waited 5 minutes and the car started but the tcs light is still on (usually stays on for a little when the battery is unplugged)
Im gonna drive it around for 5 minutes, Im assuming the ecu needs time? Hopefully when im done the car will start when its warm

update) drove around shut her off and she started right up again. Is it possible that my k&n typhoon sucks that much that my ecu was trying to get the air/fuel correct after i connected the battery? or is it because the front 02 sensor is no good?

 

You need to do some reading. https://www.rx8club.com/rx-8-discuss...t-here-202454/

With almost 200 posts, you should have a lot of this info already. That link will answer all your questions.

 

1) Disconnecting the battery clears learned parameters in the ECU, including fuel trims, wheel rolling diameter, and steering position sensor. The clearing of the fuel trims can easily make your 8 have trouble idling at first. The clearing of the steering position sensor means that you need to turn the wheel from lock to lock to give it that data. You can do that immediately, no need to drive. You get the wheel rolling diameter with one, or maybe a few more, rotations of the wheels. The next time you start the car the DSC will be gone.

2) The K&N typhoon screws with the MAF horribly. The ECU can't figure out what to make of it. You will be prone to various CEL codes being thrown, power loss, trouble at low rpm flow stability, etc... I highly recommend removing it and reverting to stock. If you really want aftermarket, go with AEM, Mazdaspeed, or Racing Beat.

3) As I've mentioned to you before, with your O2 sensor having trouble, you can not be sure of anything your engine is doing, because the ECU doesn't know what it's doing. Get that fixed asap.

 

Isn't this the same guy who wanted advice on an intake, then got the K&N one anyways. Sounds like he's beyond help

 

Hey.........how's this person gonna learn if you give them the answers?

 

Providing answers is no proof that the recipient will learn. However, I provide answers to those that might find this thread in the future and learn from it. Probably without ever commenting on it.

Same goal I always have

 

you guys see the V intake thread Al closed yesterday?

 

I just asked Ash to clean up the thread, no reason to turn it into a mess.

 

Damn it, RIWWP, you even kill Grumpy Cat!

On a serious note... are there pre MAF screens with the K&N?

 

wrong guy, it came with the k&n fyi

yes i did and if u were refering to flooding i never shut down cold
yes there is a scrreen

thanks for the help

 

[QUOTE=RIWWP;4444916]Providing answers is no proof that the recipient will learn. However, I provide answers to those that might find this thread in the future and learn from it. Probably without ever
commenting on it.


Same goal I always have [/QUOTE


Thank you sir. I am one who is learning, and I do appreciate the input. Unfortunately I am learning the hard way, having made a lot of ignorant mistakes with my 8 before I discovered the Club, and fear I may have cost myself some serious money. I am trying to be sure I don't make anymore problems for myself. Thanks again.

 

Those that found this thread in the future would've been directed to your excellent thread where they might(no, I know they will) pick up additional info or knowledge which was linked in the very first reply post.
You know I'm just giving you a hard time.

Glad it was unclosed...........