GEN 2 Need help!!!!Gen2 accelerate slow&Exhaust no roaring sound

[leo0807]

Hey Guys
I found my raptor has some problem recently.

1.accelerate slow.
When i floor pedal,RPM could not get to 4000 rapidly，it will be around 3000 rpm 1 second,and then close to 4000 slowly.The feel like stuffy nose,something block.
At the same time, I don't have any back push, the torque can't be felt.

2.Exhaust no roaring sound after rpm over 4000.

3.It is nothing change after i swith to sport driving mode,just about 200 rpm higher when shifting gears.

I can feel the problem because I drive my friend's raptor,same type,no any modification.It will can go to 4000 rpm rapidly,hard back push and exhaust very thick roar.

After that i send my truck to dealer,5 days later they told me my raptor all good...

If anyone could tell me where is the possible problem,I will be very grateful！

 

[GCATX]

Are you running premium octane or whatever it is they allow in Cali?

 

[leo0807]

I always use #91 gasoline

 

[smurfslayer]

that sounds like it might not be making boost... does boost gauge indicate it’s doing anything?

 

[Keshka]

Suggest you also check your CAT. When they fail they can plug up creating a huge exhaust restriction.

 

[smurfslayer]

Suggest you also check your CAT. When they fail they can plug up creating a huge exhaust restriction.

does it come apart in large chunks or kind of shatter (for lack of a better term) causing a ‘marbles in a can’ sound? Like the old Bassani catted x pipes.

Because that could definitely whack power.

 

[Keshka]

does it come apart in large chunks or kind of shatter (for lack of a better term) causing a ‘marbles in a can’ sound? Like the old Bassani catted x pipes.

Because that could definitely whack power.

Have seen both! Even seen rust flakes from exhaust pipe plug the intake side of the CAT honeycomb.

 

[smurfslayer]

I lost a few cats on the Bassani pipes before, they sounded horrible, but my old ’92 Exploder cat just silently failed. It was never fast, but I knew something was up when I could only manage 60mph up hill, WFO.

 

[New recaros]

Check the air filter for rats

 

[leo0807]

Thank you floor#6-#9
My truck only 8k miles used. Year 2020. I can only saw the exhaust leaking from 2 points,not seriously,and when i send it to dealer i request check the exhaust leaking problem,but they said is normaly,design is like this.
I use KN air filter and just replace it, i think intake is ok.
The greatest feeling was not too much torque feeling when flood pedal,and no exhaust sound. 0-60 mph time around 6.1-6.8 s.
May be the throttle dirty?or turbo not work well?but i didn't have any code.
This is giving me a headache.