Sick stutter

[WarriorPride87]

87 warrior
I just jetted to 45 pilot and 150 main
Aftermarket exhaust
I ran it with out the filter and less bogging but when I run the filter on it it's like it want to bog out at higher throttle any suggestions? Thanks in advanced.

 

[WarriorPride87]

Anyone have any ideas

 

[Lbswut]

I would say try a 147.5 main. Something to do with your main jet. Have you done the pen spring and valve stem cap mod?

 

[WarriorPride87]

I have done the pen spring mod but what is the valve stem cap mod?

 

[Lbswut]

You put a valve stem cap on top of the accelerator pump rod. Makes a huge difference. You really need the pen spring and the valve stem cap to really have an effect.

 

[WarriorPride87]

Alright I will give it a try my 147.5 should come in tomorrow I will report back with the results

 

[WarriorPride87]

Ok it's been a day or so I just got the 147.5 on and the stutter is still there I'm starting to wonder if this has anything to do with the neutral light staying on could this cause it?