Breaking up help

[svtserpent]

97 cobra v1 s/trim 10lb boost, 255lph in tank, 42#injectors. -plugs look good-
It breaks up at about 5800 rpms & starts losing power. Could this be air turbulence around the MAF? maybe the warmer weather out?

Thanks
Dave.

 

[smooth]

Fuel pressure loss? Do you have an incar gauge, sounds like you might need a pusher pump(inline pump) I have one if you want to try it out.

 

[Sean]

picture of siad plugs ?

97 cobra v1 s/trim 10lb boost, 255lph in tank, 42#injectors. -plugs look good-
It breaks up at about 5800 rpms & starts losing power. Could this be air turbulence around the MAF? maybe the warmer weather out?

Thanks
Dave.

 

[svtserpent]

got a gauge, but what should the psi be at WOT???

 

[svtserpent]

No pics of the plugs Im @ work. but they look normal, little tan not black,clean.

 

[1BADAIR]

what are they gapped at?

 

[svtserpent]

32

 

[svtserpent]

I have an ajdustable fuel pres reg should I bump it up? its @ around 42-45 now.

 

[Sean]

does the porciline have a shiny appearance ? like glass ?

 

[svtserpent]

no, not at all.

Im stumped.

 

[Sean]

have you tried a fesh set of plugs? snap pics of all8 and post them up. I have sporadically seen issue with the coils on the motors but I have also seen those coils make alot more power then you currently are.

no, not at all.

Im stumped.

 

[svtserpent]

Ok Im gonna throw some plugs in it.

 

[svtserpent]

Well,
Changed the plugs last night-ngk tr6- & it pulls harder than I can ever remember.
the old plugs looked good but they all had different gaps when I checked them some at 32 some at 40??
So my old plugs only lasted me about 6-7 months. ??

 

[Sean]

Snap up the plug pictures. SC and Turbo and nitrous engines tend to go through plugs with a much higher rate of frequency then non power adder motors. Are you running race fuel of unleaded ? If your running race fuels I am surprised they lasted this long.

Well,
Changed the plugs last night-ngk tr6- & it pulls harder than I can ever remember.
the old plugs looked good but they all had different gaps when I checked them some at 32 some at 40??
So my old plugs only lasted me about 6-7 months. ??

 

[svtserpent]

Yup I try and run a 93/110 mix. OR I have the option on my xcalII for a straight 110 tune.
You still want pics??

 

[Sean]

if you don't mind. I like seeing plugs in various states of functioning and non functioning.

Yup I try and run a 93/110 mix. OR I have the option on my xcalII for a straight 110 tune.
You still want pics??

 

[svtserpent]

Got some pics they all look the same.

 

[dave89iroc]

how much timing it got in it?

 

[1BADAIR]

how much timing it got in it?

LOL you read my mind

 

[svtserpent]

Not sure. I could do some data logging with my x calII. I think I have an old data file on my laptop.

edit- found the old data file, spark was anywhere from 14 up to 32.