P38A P38 exhausts

LR-hobbs · Tuesday at 21:12

Hello everyone I have just picked myself up a 1999 P38 4.0

The previous owner has done a back box delete , but not very well the exhaust has seen better days, could anyone advise me on some stainless steel alternatives?

And is it wise to do a full silencer delete?

Cheers

pwood999 · Tuesday at 21:47

It will be noisy, but sound good until the wife & neighbours complain !

kermit_rr · Tuesday at 21:57

I think they sound nice with the back boxes gone, just the big middle box in place. Not too loud but loud enough to be heard

pwood999 · Tuesday at 22:32

After my rebuild I ran mine with just the cats. It was good but . . . . . . .

Datatek · Wednesday at 07:58

Mine are diesels but I have Double S stainless on both, I'm happy to recommend them. Personally, I prefer quiet these days.

LR-hobbs · Wednesday at 10:30

kermit_rr said:
I think they sound nice with the back boxes gone, just the big middle box in place. Not too loud but loud enough to be heard

Yes that's the current set up and it does sound mean.

LR-hobbs · Wednesday at 10:32

pwood999 said:
After my rebuild I ran mine with just the cats. It was good but . . . . . . .

I do want to hear a fully straight piped one in person but I don't think I'd live with it. Il be using it everyday.

I prefer tune over loudness.

kermit_rr · Wednesday at 10:38

LR-hobbs said:
Il be using it everyday.

That's the thing, if it's too loud it gets tiresome after a while

LR-hobbs · Wednesday at 10:39

kermit_rr said:
That's the thing, if it's too loud it gets tiresome after a while

I'm going to try and find a cat back exhaust with some performance silencers rather than a full straight pipe.

LR-hobbs · Wednesday at 10:42

pwood999 said:
It will be noisy, but sound good until the wife & neighbours complain !

I don't have a wife, so that's one less to worry about.

FEI · Wednesday at 10:54

Yeah ive got two small free flow silencers instead of the cats and then the centre silncer. Outside the car its still loud and in my opinion the tone is almost spot on. But once you close the windows and cruising on the highway with some music you have to listen carefully to hear the exhuast.

Unbolt your exhuast just after the Y pipe and have a listen, that will probably be roughly what a straight pipe will sound like. Ive done this and its very loud, to the point where i want to stick my fingers in me ears if you just tap the throttle while standing outside the car.

kermit_rr · Wednesday at 11:03

LR-hobbs said:
I'm going to try and find a cat back exhaust with some performance silencers rather than a full straight pipe.

Years ago i had an rrc.. that had a middle box off a Renault sport. That sounded AWESOME

pwood999 · Wednesday at 11:16

My blue P38 has single rear pipe & centre box. It sounds much more throaty than the green P38 which has the standard twin pipe system. Not excessively loud, but enough to turn heads, especially at pedestrian crossings if I rev it !!

Datatek · Wednesday at 11:31

pwood999 said:
My blue P38 has single rear pipe & centre box. It sounds much more throaty than the green P38 which has the standard twin pipe system. Not excessively loud, but enough to turn heads, especially at pedestrian crossings if I rev it !!

Don't come to France, they are installing sound monitors with ANPR to trap noisy vehicles.

RangeRoller dt · Wednesday at 11:40

When you go off-roading it’s common to squish the rear box(es) after a sharp descent, so I had a single straight pipe only at the back for years.

When it falled oft I toyed with the idea of having a straight through system

decided in end that even with only 6 cylinders it needed the middle box and a rear single.

Worked out fairly cheap too compared to twin exhausts

kermit_rr · Wednesday at 11:51

Datatek said:
Don't come to France, they are installing sound monitors with ANPR to trap noisy vehicles.

That's all good but what about the vehicles that are too loud when they left the factory? I'm thinking about the ducati panigale which often fails static noise tests at track testing

MrGorsky · Wednesday at 13:32

pwood999 said:
After my rebuild I ran mine with just the cats. It was good but . . . . . . .

When I rebuilt mine I took it down and up the hill with just the manifolds on. By christ...

Datatek · Wednesday at 17:53

kermit_rr said:
That's all good but what about the vehicles that are too loud when they left the factory? I'm thinking about the ducati panigale which often fails static noise tests at track testing

Illegal in France to use on the road, I suspect it's power output will also make it illegal.

kermit_rr · Wednesday at 18:54

Datatek said:
Illegal in France to use on the road, I suspect it's power output will also make it illegal.

I thought they rolled back on the 100bhp restriction ages ago? Honestly that was a daft one when just about every 600cc bike is over that.
With the Ducati it's something to do with the exhaust being low to the ground.. a static/stationary noise test with come out over 100db as built by the factory

Datatek · Wednesday at 19:24

kermit_rr said:
I thought they rolled back on the 100bhp restriction ages ago? Honestly that was a daft one when just about every 600cc bike is over that.
With the Ducati it's something to do with the exhaust being low to the ground.. a static/stationary noise test with come out over 100db as built by the factory

You are right rolled back with some exceptions in 2016. It was a nonsense anyway, my FJR was 150 bhp restricted to 100 bhp by a stop on the throttle which mysteriously disappeared at the first service.

P38A P38 exhausts

Active Member

Well-Known Member

Very

Well-Known Member

Well-Known Member

Active Member

Active Member

Very

Active Member

Active Member

Active Member

Very

Well-Known Member

Well-Known Member

Well-Sprung Member

Very

Well-Known Member

Well-Known Member

Very

Well-Known Member

Similar threads