Flex fuel kit and spark plugs

[hmongkilla1]

I recently installed my wifi prl flex fuel kit and upgraded spark plugs. When i would start my car, it would start weakly and I'd have to give it more gas. Any solutions?

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[Romeoridgee]

Try putting the oem plugs back in

 

[arpypat]

What did you gap the plugs to?

 

[Chris_19Si]

I don't think there is enough information here. What tune, what % ethanol, plug gap...add this info to see if there are better responses to offer.

I run Phearable 2.5 tune (race MAF), 35% ethanol, and gap down to .028" on stock plugs. Has run great for over 2 years.

 

[hmongkilla1]

What did you gap the plugs to?

Had my buddy install the spark plugs while i was doing other work, I think he put it in as is. How big is the gap?

 

[arpypat]

Had my buddy install the spark plugs while i was doing other work, I think he put it in as is. How big is the gap?

Best practice is to check the gap out of the box! For a tuned Si, you should be targeting around 0.025 - 0.028" and try to gap all 4 the same.

 

[Ap1 George]

You are running a flex fuel tune correct?

 

[Chris_19Si]

Stock gap is around.030 to .032. may vary a bit. I wouldn't let other people do work like that on my car. Best, and easy to do it yourself and control the install. Helps you troubleshoot things like this. Not sure why you are convinced the plugs are the problem, but easy to check by uninstalling them one at a time and checking wire connections, inspecting boots for cracks, and check the porcelain along with the gap and make sure the plug color is the same as the other 3. Basic stuff, and easy to do, but no telling if your buddy did all of this.

 

[hmongkilla1]

You are running a flex fuel tune correct?

Yes I am, w2 stage dub tune

 

[Ronny2019]

Yes I am, w2 stage dub tune

How much e 85 are you reading?

 

[hmongkilla1]

How much e 85 are you reading?

10 percent

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