F8X Downpipe gains ? No Software

[Quick///M]

Hi Guys

Has anyone had downpipes only on their F8X cars ? If so what was the gains. Keen to know

 

[yush1]

With a DP you'll get minimal gains. If you lucky maybe 3-4kw. Its more about the improved throttle response, eliminating lag and prolonging the life of the turbo.

 

[FerdiBotha]

You should gain around 10-15kw and 20-40nm. Throttle response will also be quite a bit better :thumbs:

 

[Quick///M]

Did a quick read seems to be around 15kw some people getting more. A few posts say no gains but not so sure

 

[yush1]

Maybe one of the tuner guys will be able to give us more info based on their experience :thumbs:

 

[FerdiBotha]

Did a quick read seems to be around 15kw some people getting more. A few posts say no gains but not so sure

Your car will definitely gain power.

There are a couple of local tuners on Facebook who regularly post results and all of them have gained somewhere in that range that I mentioned.

As with all mods it’s good to do a before and after dyno.

 

[Taran Rodrigues]

I know someone that did just a downpipe,
and they gained around 15wkw

 

[Quick///M]

I know someone that did just a downpipe,
and they gained around 15wkw

Do they have before and after dyno runs ?

---

Did a quick read seems to be around 15kw some people getting more. A few posts say no gains but not so sure

Your car will definitely gain power.

There are a couple of local tuners on Facebook who regularly post results and all of them have gained somewhere in that range that I mentioned.

As with all mods it’s good to do a before and after dyno.

Eish I dont user FB :skit:

I agree I need to find a dyno place near by. Tried FRNR but they told me they don't do dyno runs to the public. So looking for a place close by. Not sunninghill dyno tried them before couldn't get proper readings from my car so will never go there again.

 

[FerdiBotha]

One of the most widely used dynos in Gauteng is KAR in Spartan. Their dyno seems to be the most accurate (if there is such a thing), which is why I also do all my runs there.

To give you an idea - here is before and after runs of a M135i with DP. I cropped out the tuner and their details as that is somewhat irrelevant.

 

[Dees_13]

The gains are as the guys are saying. I have a dp on my 335i. I gained 18kw 40nm with it

 

[Quick///M]

The gains are as the guys are saying. I have a dp on my 335i. I gained 18kw 40nm with it

Sounds right i got 20wkw on my m135i. The F8x is different altogether so I was wondering

 

[Kimeran]

FR&R is having a charity dyno day tomorrow.
From what I've seen, people aren't gaining final power figures from just DP. But it spools up better, so the curve does look better.

 

[Redshert]

Try KAR Performance: 80 Plane Rd, Spartan. 011 975 7125.

Call ahead for a "booking", R200 for 2 runs.
I am taking my car back soon for an after DP only run.

 

[r0ckf1re]

I know someone that did just a downpipe,
and they gained around 15wkw

Do they have before and after dyno runs ?

---

Did a quick read seems to be around 15kw some people getting more. A few posts say no gains but not so sure

Your car will definitely gain power.

There are a couple of local tuners on Facebook who regularly post results and all of them have gained somewhere in that range that I mentioned.

As with all mods it’s good to do a before and after dyno.

Eish I dont user FB :skit:

I agree I need to find a dyno place near by. Tried FRNR but they told me they don't do dyno runs to the public. So looking for a place close by. Not sunninghill dyno tried them before couldn't get proper readings from my car so will never go there again.

---

Dynosport in Randburg

 

[Danny2]

Try KAR Performance: 80 Plane Rd, Spartan. 011 975 7125.

Call ahead for a "booking", R200 for 2 runs.
I am taking my car back soon for an after DP only run.

+1 Shane is always available and will gladly accommodate customers

 

[.FOURTY-5]

My Gains

Downpipes And Intakes

M4

Sent from my SM-N950F using Tapatalk

 

[Quick///M]

My Gains

Downpipes And Intakes

M4

Sent from my SM-N950F using Tapatalk

Thanks for posting that's bloody strong. I made 310kw today at kar today

 

[Twinz]

Without a doubt you will gain power due to the (reduction in backpressure)....

Then add a tune to optimise air/fuel for even better performance.

 

[Schalk94]

Without a doubt you will gain power due to the (reduction in backpressure)....

Then add a tune to optimise air/fuel for even better performance.

AFAIK more backpressure doesn't benefit a turbo car in any way

 

[Quick///M]

Without a doubt you will gain power due to the (reduction in backpressure)....

Then add a tune to optimise air/fuel for even better performance.

AFAIK more backpressure doesn't benefit a turbo car in any way

He said reduction in backpressure, I have seen gains on most of my cars with exhaust/dp