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Plug gap for M-12405-35T and muffler recommend?

Started by TopherSho, January 03, 2021, 07:02:29 PM

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TopherSho

Lost to a NA SRT8 Jeep today... Unacceptable.

I have ignored the 2 nagging "not now issues long enough."

1- what gap is everyone running the M-12405-35T at?  There default ..029 .. but they feel and log at lower spark levels than the sp542's. ... I feel they should be .027 at most with that tiny tip..

And what mufflers do I need .. the OEM replacements suck.  Hard.  They killing me and the noise they make is awful

Thoughts? 
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

Admin

Quote from: TopherSho on January 03, 2021, 07:02:29 PM
Lost to a NA set8 Jeep today... Unacceptable.

I have ignored the 2 nagging "not now issues long enough."

1- what gap is everyone running the M-12405-35T at?  There default ..029 .. but they feel and log at lower spark levels than the sp542's. ... I fell they should be .027 at most with that tiny tip..

And what mufflers do I need .. the OEM replacements suck.  Hard.  There killing me

Thoughts? 
.026 to .028 depending on what the tuner recommends on the plugs...

Mufflers are noise only until you need 2.5" all the way through. Which is needed when you upgrade turbos based on the data. Stock exhaust is fine.

TopherSho

Ok last time I talked to Brad .027 was his thoughts on the new tips. 


I'm surprised on the thought of leaving the mufflers alone. But you are wiser than I. 


Ok PPE CATS on order.  We'll have to go back for a rematch after that.
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

ridered74

I ran those plugs at .026 all summer, no issues.
Gearhead E30 tune, Gearhead intercooler, LMS firestorm hpfp, catted downpipes, corsa catback, 160 degree thermostat, 3 bar map, upgraded AD trans mounts, MSD coils, Nitto 555R drag tires on front, AR924 wheels and BFG sport comp 2 summer tires on rear, and an EPP intake.

12.2479 @ 118.05 fastest trap
11.591 @ 114.89   fastest ET

TopherSho

Hey sir,  on the exhaust..  what's the sound like at 65-70 on cruise control .. ? 
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

ridered74

Quote from: TopherSho on January 03, 2021, 11:46:47 PM
Hey sir,  on the exhaust..  what's the sound like at 65-70 on cruise control .. ?


Corsa catback sounds fine cruising at 65-70 or any other constant speed. It only sounds bad (to me) when you are accelerating, maybe 2K-2500 rpms or so it has that honda sound to it.
Gearhead E30 tune, Gearhead intercooler, LMS firestorm hpfp, catted downpipes, corsa catback, 160 degree thermostat, 3 bar map, upgraded AD trans mounts, MSD coils, Nitto 555R drag tires on front, AR924 wheels and BFG sport comp 2 summer tires on rear, and an EPP intake.

12.2479 @ 118.05 fastest trap
11.591 @ 114.89   fastest ET

TopherSho

Made contact at Gearhead.  :(  I wish I knew what was happening to Brad.. I feel guilty talking to them about upping my tune when the cats arrive.
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

ridered74

Quote from: TopherSho on January 04, 2021, 11:59:15 AM
Made contact at Gearhead.  :(  I wish I knew what was happening to Brad.. I feel guilty talking to them about upping my tune when the cats arrive.




Think about it logically. You are the customer, you paid him. No reason whatsoever to feel guilty about going elsewhere even if he did reply to emails.


I've used almost all the major tuners (brad included) and i'd be willing to bet once you go gearhead you will not look back.
Gearhead E30 tune, Gearhead intercooler, LMS firestorm hpfp, catted downpipes, corsa catback, 160 degree thermostat, 3 bar map, upgraded AD trans mounts, MSD coils, Nitto 555R drag tires on front, AR924 wheels and BFG sport comp 2 summer tires on rear, and an EPP intake.

12.2479 @ 118.05 fastest trap
11.591 @ 114.89   fastest ET

TopherSho

What is there turnaround time like usually? Seems slow to reply to me .. Might be due to week-after holiday.

2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

ridered74

Quote from: TopherSho on January 05, 2021, 04:51:06 PM
What is there turnaround time like usually? Seems slow to reply to me .. Might be due to week-after holiday.


They were closed from christmas thru new years, I think yesterday was their first day being back open so they are probably catching up from a week's plus worth of requests.


I think normally when you buy a tune the turnaround time is usually a day or two.
Gearhead E30 tune, Gearhead intercooler, LMS firestorm hpfp, catted downpipes, corsa catback, 160 degree thermostat, 3 bar map, upgraded AD trans mounts, MSD coils, Nitto 555R drag tires on front, AR924 wheels and BFG sport comp 2 summer tires on rear, and an EPP intake.

12.2479 @ 118.05 fastest trap
11.591 @ 114.89   fastest ET

TopherSho

Quote from: TopherSho on January 05, 2021, 11:50:14 PM
It
Is
So
Hard
To
Be
Patient...

I have a SRT8 jeep to beat in a ill handling landyacht



ok will wait...
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

TopherSho

New plugs @  .026 on order with GH and a tune.  Plugs and base tune set for the 13th or so ..
PPE downpipes 7 weeks away /cry/


Still eyeballing the mufflers .. wish i had a TIG ... id cut the backs off and drill the baffles a bit then put the backs on again ..

2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction