Spark plugs for a slightly modded cat

[Koozies fat cat]

Hey all. I have a 2015 with the ripatuned lower pulley and an intake. Do I need to replace the spark plugs with stock gapped plugs or something more gapped since the car isn’t fully stock?

 

[16GoManGoHC2]

Probably not, but if you want to check them and change them while there most use NGK 2309 gapped at .028” for mild boost applications.

 

[Speedy!]

I ran stock plugs in mine at 20psi with no problems, but when it's time to change them do what GoManGo says.

 

[Unholy707]

Probably not, but if you want to check them and change them while there most use NGK 2309 gapped at .028” for mild boost applications.

I just replaced mine gapped at .021 😎

 

[16GoManGoHC2]

I’ve run 30 psi of boost on the NGK 2309 gapped at .018” with the 3.8 Whipple, they are still in the engine at that gap at 24-25 psi of boost now with the 2.7 IHI, runs good enough to break my Tranzilla lol.
With more boost less gap not more is better, especially on a wetter aircharge charge with ethanol.

 

[Unholy707]

I’ve run 30 psi of boost on the NGK 2309 gapped at .018” with the 3.8 Whipple, they are still in the engine at that gap at 24-25 psi of boost now with the 2.7 IHI, runs good enough to break my Tranzilla lol.
With more boost less gap not more is better, especially on a wetter aircharge charge with ethanol.

.018 is pretty tight lol, I just didn’t want spark blow out and I know I’m making more boost now and it breaths better

 

[Unholy707]

Last set was .028 and they got a bit wider and was starting to break up under boost

 

[Koozies fat cat]

I ran stock plugs in mine at 20psi with no problems, but when it's time to change them do what GoManGo says.

I’m barely pushing 13-14 pounds of boost with my setup as is. I guess stock plugs isn’t an issue.

 

[Linda's Hell Cat]

@Koozies fat cat

What lower pully do you have?


Or are you running the RipTuned "Incognito"

 

[Koozies fat cat]

I

@Koozies fat cat

What lower pully do you have?


Or are you running the RipTuned "Incognito"

Its the ripatuned incognito

 

[ACMAVRO]

I’m barely pushing 13-14 pounds of boost with my setup as is. I guess stock plugs isn’t an issue.

Same setup (tuned) I've been running since 21 on stock plugs. No issues so far.

 

[Koozies fat cat]

Same setup (tuned) I've been running since 21 on stock plugs. No issues so far.

Did you leave the plugs at the 0.032 stock gap?