S2000 Forced Induction S2000 Turbocharging and S2000 supercharging, for that extra kick.

1 isn't like the other

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Old Jul 20, 2013 | 09:17 PM
  #31  
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Thanks Wad.

Did a leak down today, each cylinder was consistent, with a +/- of 2 psi across the board.

I'm gonna swap injectors as soon as can and see what she does.


The 8's are a resistor type plug correct ?




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Old Jul 21, 2013 | 05:30 AM
  #32  
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depends on which ones.. there are 10000 different ngk 8 heat range plugs.

I always run 2668 .. bkr8eix
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Old Jul 21, 2013 | 08:57 AM
  #33  
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Originally Posted by wadzii
depends on which ones.. there are 10000 different ngk 8 heat range plugs.

I always run 2668 .. bkr8eix

Sorry I should have been more specific, that's what I use as well.


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Old Jul 21, 2013 | 12:14 PM
  #34  
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Originally Posted by siadam
Originally Posted by sohc_mshue' timestamp='1374123812' post='22672824
Has the car started to run leaner out of boost too? Does it get progressively leaner as rpms go up in boost? If so id look at fuel pressure in boost. Likely a flow problem.

No, not that I've seen.

When I added fuel, it seemed to take it. Last time I added a chunk of fuel, it dropped afr's.

Are you saying that because the injector is at the end of the rail?


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If fuel is still the same at part throttle and idle, but is now requiron more and more fuel as rpm rises at wot id seripusly look into it being a fuel flow problem. Get a fuel presaure sensor on there. Pump could be going bad or a flow restriction somewhere.
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Old Jul 21, 2013 | 12:15 PM
  #35  
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Originally Posted by siadam
Originally Posted by sohc_mshue' timestamp='1374123812' post='22672824
Has the car started to run leaner out of boost too? Does it get progressively leaner as rpms go up in boost? If so id look at fuel pressure in boost. Likely a flow problem.

No, not that I've seen.

When I added fuel, it seemed to take it. Last time I added a chunk of fuel, it dropped afr's.

Are you saying that because the injector is at the end of the rail?


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If fuel is still the same at part throttle and idle, but is now requiring more and more fuel as rpm rises at wot i would seriously look into it being a fuel flow problem. Get a fuel pressure sensor on there. Pump could be going bad or a flow restriction somewhere.
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Old Jul 21, 2013 | 10:21 PM
  #36  
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That would sound like a pretty good candidate for it to be fueling issue, but 3 of the plugs are fine, only the 1 is on the lean side currently.

I'm going to swap injectors this week, and see how she does. Make a couple short pulls, shut down and check my plugs. I also borrowed a buddies WB to compare with mine.

I really hope the problem follows the injector. Be alot easier fix, either way I'll get to the bottom.

Appreciate the follow up(s).


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Old Jul 31, 2013 | 12:29 PM
  #37  
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Thought I'd bump this.
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Old Jul 31, 2013 | 07:15 PM
  #38  
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Originally Posted by siadam
Thought I'd bump this.
Any updates new injectors in?

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Old Aug 1, 2013 | 07:38 AM
  #39  
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Originally Posted by bobbyrandolph440
Originally Posted by siadam' timestamp='1375302599' post='22698896
Thought I'd bump this.
Any updates new injectors in?

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Went around the block, and drove to a car show, 5 mins down the road, romped on it a few times, pulled plugs, they all looked the same, still going lean in boost.

On the way home from the show I rolled into 1st and 1st gear let loose, so yea.
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Old Sep 16, 2013 | 01:01 PM
  #40  
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I thought I'd follow up with this.

I was basing my lean condition on the look of my plugs, AND my wideband. I borrowed my buddies external plx WB, and hooked it up inline with mine.

Mine is off a bit. All the fuel I was throwing at the car to bring down the "lean condition", shows me running 10.4 in boost. SO, with that said, I'm going to pull some fuel back out, and see how she does.

I finally matted it for the first time on Saturday, and even on 10#'s, it screams. Now I have to figure out why my brand new aem WB isn't reading properly, not to mention, it seems very slow to respond, unlike his plx which was very quick.

Regardless, things are looking up with the car (except the first gear issue I had).
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