Miata Turbo Forum - Boost cars, acquire cats.

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EO2K 04-10-2014 06:26 PM

Isnt there some thing with 1.6 cars where the FP is wired up through the stock air meter? I think you have to jumper something or something.

(I've got an NB so my NA6 knowledge is somewhat suspect)

Jeffbucc 04-10-2014 07:01 PM

You are massively correct E02K.

Jumped the wire from fuel pump to the AFM and the car instantly started after I accidentally turned the key to far! Holy shit that surprised me.

I shut it down quickly though since it was completely unintentional.

After I jumped to AFM there is a very loud buzzing noise coming from beneath the cars gauges... not sure why this is.

I ran a wire from the fuel pump and connected it to these two points on the AFM

https://www.miataturbo.net/attachmen...ine=1381422159

Jeffbucc 04-10-2014 08:00 PM

Looks like it is the fuel pump relay under the dash that is buzzing loudly.

Scared I may have an air leak at the turbo. High pitched whistle on shut down.

Oil gauge isn't responding to pressure so I may need to clean the oil sender pin and find out if that is the problem.

EO2K 04-10-2014 08:07 PM

SO IT LIVES?

Jeffbucc 04-10-2014 08:08 PM

1 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1397174895

Jeffbucc 04-10-2014 08:08 PM

Just...not a very healthy alive!

M.Adamovits 04-10-2014 08:41 PM


Originally Posted by Jeffbucc (Post 1120453)
Oil gauge isn't responding to pressure so I may need to clean the oil sender pin and find out if that is the problem.

Can you confirm it actually has pressure? Last thing you need is to damage this work of art.

Jeffbucc 04-10-2014 08:46 PM


Originally Posted by M.Adamovits (Post 1120470)

Can you confirm it actually has pressure? Last thing you need is to damage this work of art.

I'm going to pull the turbo oil feed and see for sure that oil is flowing.

turbofan 04-10-2014 08:46 PM

So... accidental first start?

https://i.chzbgr.com/maxW500/4863039232/h4B1C6EDC/

Jeffbucc 04-10-2014 08:49 PM

Yeah it seriously didn't even crank for 1/2 a second and it suddenly started up. No stumbling or anything. It does have a loping idle though. Can't tell too much without the tach working.

Jeffbucc 04-10-2014 11:05 PM

Pulled the CAS and COP and cranked with the oil feed line from the turbo off. It dumped about 1/2 cup of oil into the cup, so I don't think any damage is happening to the turbo and it is developing oil pressure.

Also switched the tach settings in tuner studio to ON, but there was interference from the PWM signal so I changed it to tach and still no response from the gauges.

If my tach out is on 2B on MS, which is the correct output for tunerstudio?

I also need to set the 99 tps/IAT to a new setting. Tunerstudio is reading it at 51% throttle at idle, but it is idling at 2350 rpm.*edit* I may have the 5v and ground reversed after a little reading.

When I have the fuel pump jumped it is reading the fuel pump at 100% duty cycle as well, which may be why I'm getting such a loud noise from the fuel pump relay.

richyvrlimited 04-11-2014 04:04 AM

The fuel pump is either on or off, no MX5 made (yet) uses PWM on the fuel pump.

More likely you just have a bad relay.

Jeffbucc 04-11-2014 04:49 AM


Originally Posted by richyvrlimited (Post 1120545)
The fuel pump is either on or off, no MX5 made (yet) uses PWM on the fuel pump.

More likely you just have a bad relay.

I'd agree but that would mean both relays from both cars I tried were bad, odd considering both worked perfectly prior to this build.

I think I may have ran the wire from the fuel pump to the AFM incorrectly to jump it. We'll see.

rleete 04-11-2014 08:39 AM

Wiring is such a pain in the ass. I don't even like putting in aftermarket stereos anymore.

ScottyP3821 04-11-2014 09:17 AM


Originally Posted by Jeffbucc (Post 1120430)
Hmm ok ignore that. For some reason the fuel injection fuse was missing, so I scavenged one from my old car, turned the key, and my laptop instantly recognized MS.

still no fuel pump priming though...

Yep just what I figured. See post 2054

ScottyP3821 04-11-2014 09:18 AM


Originally Posted by Jeffbucc (Post 1120474)
I'm going to pull the turbo oil feed and see for sure that oil is flowing.

Be careful with that. Wouldnt want oil squirting all over your clean car. I would tape the feed into a water bottle.

EO2K 04-11-2014 11:44 AM


Originally Posted by ScottyP3821 (Post 1120599)
Be careful with that. Wouldnt want oil squirting all over your clean car. I would hook that feed up to the turbo

:party:

Jeffbucc 04-11-2014 05:25 PM


Originally Posted by ScottyP3821 (Post 1120599)

Be careful with that. Wouldnt want oil squirting all over your clean car. I would tape the feed into a water bottle.

You'd be opposed to some real skeet skeet?

Don't worry, I wouldn't just let the oil pour out over the engine bay!

The good news is that oil is flowing, how much pressure it is developing is still the question.

Jeffbucc 04-11-2014 11:24 PM

2 Attachment(s)
I needed a break from tunerstudio and researching stuff so I decided to get my headlights and other lights working right.

Forgot to check the continuity of the wires when I installed the new harness and it turns out grounding to the starter is not so good idea.

The diode I had put in was in the wrong direction so it wasn't blocking the high beams when only the low beams were on. So after changing the direction and getting everything sorted out they work perfectly.

My god they are bright too. When all 4 lights are on it makes the factory xenons on my Jetta look weak and dim.

https://www.miataturbo.net/attachmen...ine=1397273073

https://www.miataturbo.net/attachmen...ine=1397273073

Also thought I'd take a quick shot of the gauges with the white LEDs I put in. The bleeding around the needle caps is only due to them not being pressed on firmly since I need to align them once my tach starts working. The brightness of the trip meter and total miles is over-accentuated by the camera. It looks great IRL.

http://i26.photobucket.com/albums/c1...c/IMG_2611.jpg

FAB 04-12-2014 12:14 PM

Classy as $!&#. Well done sir.


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