2024 Raptor R High Idle At Start Up

[hamster]

I hate to be the crusher here, but I question how many of you had performance cars (or cars in general for those concerned about high idle upon startup lol) before purchasing this truck.

Every single high compression, high hp engine, I've ever had has had backfires and burbles off throttle. Should have been around my cammed LS3, it sounded like M80s going off with a BTR Stage 4 cam.

My GT350 burbles and pops all the time off throttle coasting, especially in lower gears.

I am so "crushed" that I am going to the corner and cry.

I did not view this as complained, but comparing notes.

 

[BoostCreep]

I hate to be the crusher here, but I question how many of you had performance cars (or cars in general for those concerned about high idle upon startup lol) before purchasing this truck.

Every single high compression, high hp engine, I've ever had has had backfires and burbles off throttle. Should have been around my cammed LS3, it sounded like M80s going off with a BTR Stage 4 cam.

My GT350 burbles and pops all the time off throttle coasting, especially in lower gears.

True with the exception that the predator isn’t really a high compression engine.

 

[New recaros]

I hate to be the crusher here, but I question how many of you had performance cars (or cars in general for those concerned about high idle upon startup lol) before purchasing this truck.

Every single high compression, high hp engine, I've ever had has had backfires and burbles off throttle. Should have been around my cammed LS3, it sounded like M80s going off with a BTR Stage 4 cam.

My GT350 burbles and pops all the time off throttle coasting, especially in lower gears.

That’s because engines that old did not have fuel injection or variable timing and had a manual choke in the cab. Lol

 

[Swacer_2]

True with the exception that the predator isn’t really a high compression engine.

Valid point, looks to be 9.5:1 So its alllllmost there.

 

[BoostCreep]

Valid point, looks to be 9.5:1 So its alllllmost there.

No it’s not really that close. 8-10 is what most would consider “low” compression typical on any forced induction motor. High compression n/a performance motors are usually 11-12.5, higher on race fuel.

Crackles and burbles are related to fueling and timing, not compression.

 

[Marcos Figueroa]

My R usually runs at approximately 1500 RPM for the first few seconds. I don't think it's ever done this for 30 seconds though

I have 1,150 miles on mine and it runs at 1500 for about 20 seconds. Didn't notice it at first.

 

[hamster]

I have 1,150 miles on mine and it runs at 1500 for about 20 seconds. Didn't notice it at first.

So the real question is do you have subtle vibration of truck while at 1500 rpm?

 

[Marcos Figueroa]

So the real question is do you have subtle vibration of truck while at 1500 rpm?

No vibration that I notice but will check again when I drive it.

 

[hamster]

No vibration that I notice but will check again when I drive it.

More noticable when startup. I don't notice it when put in drive and go as it not at 1500 rpm very long.

 

[RCorsa]

Yeah out of all my sports cars the raptor r has the second best sounding exhaust. I like the burbles and pops. My 2023 Urus has the best exhaust however and its exhaust (and looks) turns heads while driving. The raptor even in Baja does not so I wonder how much is pumped into the cabin?