Performance exhaust etc.

[Dansc]

Hello,
I am buying an used M5 this month. Just starting to read what kind of performance modification are available. A friend of mine did the programming on my RS6 and he will also do it on the M5 (he works at a racing department of one of the OEMs). What parts are available to help the programming like exhaust etc.? What do you guys recommend. I am trying to get more than 700 hp.

Thanks
Dan

[13M5F10]

Originally Posted by Dansc

Hello,
I am buying an used M5 this month. Just starting to read what kind of performance modification are available. A friend of mine did the programming on my RS6 and he will also do it on the M5 (he works at a racing department of one of the OEMs). What parts are available to help the programming like exhaust etc.? What do you guys recommend. I am trying to get more than 700 hp.

Thanks
Dan

RPI GTM Exhaust / RPI Downpipes / MSR intake / MSR Stage 2 Tune. Should have close to 750 HP Crank

[momos750]

Originally Posted by 13M5F10

RPI GTM Exhaust / RPI Downpipes / MSR intake / MSR Stage 2 Tune. Should have close to 750 HP Crank

+1

[Misfired Cylinder]

Here is my honest opinion:

- Stay away from downpipes if the car is a daily driver and/or you have a family. The smell is there and it will be very visible to everyone. You don't want your kids inhaling those fumes.
- The tunes on these cars are amazing. So much power and they completely transform the car. The problem is twofold: Premature component wear (get ready to change your spark plugs every 10,000 miles and DCT clutch pack) and more importantly traction. The rubber and the chassis simply is not enough to handle all that extra power. You probably need a 325/335 rear tire and an entirely different differential and suspension. Car has so much power already, even in its stock form, it's faster than 99.9% of the cars on the road.
- Exhaust makes a huge difference. I would suggest RPI or Eisenmann Race. Factory exhaust is very quiet and a good exhaust will transform the car.
- MSR intake is amazing, totally transforms the car. Worth the price.

[Dansc]

Thanks! This is very helpful!
What am I losing if I do not install the downpipes?
I think I will try the Eisenmann race version. Are there different options available?
I am really surprised about the intake..that is really great what I read about it. Does MSR have a homepage?

Are there any clutch upgrades available? How about different spark plugs?

I run my RS6 with 700hp for about 50.000 miles now and had no issues at all so far.

Thanks
Dan

[Dansc]

Just read that I probably have to use the Eisenmann Sport instead of the race version because of Tuev certificate. Are there big differences in performance?

[13M5F10]

Originally Posted by Dansc

Thanks! This is very helpful!
What am I losing if I do not install the downpipes?
I think I will try the Eisenmann race version. Are there different options available?
I am really surprised about the intake..that is really great what I read about it. Does MSR have a homepage?

Are there any clutch upgrades available? How about different spark plugs?

I run my RS6 with 700hp for about 50.000 miles now and had no issues at all so far.

Thanks
Dan

In order to take advantage of stage 2 tunes, you will need the downpipes. The smell is no different than any other catless car.

MSR does have a home page but I do not believe they have products listed on their. Youll need to PM him on here or hit him up on FB. His username is M6Beast on here.

As for clutch upgrades, there are plenty available if you google search. SSP is a popular one.

Spark Plugs - MSR Stage 2 tune does require spark plug upgrades and he provides those when you do the upgrade.

[Dansc]

Thanks for the great help!
What do you guys do regarding suspension?

I will update when I have found the right car. I have 3 to choose from at the moment. I would like to buy the one with frozen grey paint but it has 70.000 miles already...probably will go black or grey with about 20.000 miles.
Dan

[MCarsFan]

Originally Posted by Dansc

Thanks for the great help!
What do you guys do regarding suspension?

I will update when I have found the right car. I have 3 to choose from at the moment. I would like to buy the one with frozen grey paint but it has 70.000 miles already...probably will go black or grey with about 20.000 miles.
Dan

I installed the RPi GTM exhaust about two months ago. I will hopefully be getting some dyno sheets done soon, but I feel the exhaust has added power, due to no resonators or mufflers in the exhaust..sound wise, sounds pretty awesome. No issues with the windows closed..but it's loud with the windows down..cold start..no comment needed!!! Overall its been a great experience.
Suspension wise, are you looking at a CP or Base M5? I don't think much needs to be done to the CP suspension.

[M-bitious]

As you are in Germany you may want to check out the German Alphamale Performance remote controlled valves exhaust. Look at the FB page of simonmotorsportgermany.

[MCarsFan]

[IMG]

[/IMG]

[Dansc]

Originally Posted by MCarsFan

I installed the RPi GTM exhaust about two months ago. I will hopefully be getting some dyno sheets done soon, but I feel the exhaust has added power, due to no resonators or mufflers in the exhaust..sound wise, sounds pretty awesome. No issues with the windows closed..but it's loud with the windows down..cold start..no comment needed!!! Overall its been a great experience.
Suspension wise, are you looking at a CP or Base M5? I don't think much needs to be done to the CP suspension.

I will probably go with the base version...or is the CP a much better starting point that it would make more sense? The CP version is still much more expensive because there are not so many used ones available.

[Dansc]

Originally Posted by M-bitious

As you are in Germany you may want to check out the German Alphamale Performance remote controlled valves exhaust. Look at the FB page of simonmotorsportgermany.

Okay I will take a look thanks!

[m5james]

Originally Posted by 13M5F10

In order to take advantage of stage 2 tunes, you will need the downpipes. The smell is no different than any other catless car.

MSR does have a home page but I do not believe they have products listed on their. Youll need to PM him on here or hit him up on FB. His username is M6Beast on here.

As for clutch upgrades, there are plenty available if you google search. SSP is a popular one.

Spark Plugs - MSR Stage 2 tune does require spark plug upgrades and he provides those when you do the upgrade.

How are you liking your Eurocharged tune? Why'd you chose them over others? I'm torn between Eurocharged and ESS right now.

What plugs are MSR tunes upgrading to? This is a first I've heard of people using anything other than stock.

[13M5F10]

Originally Posted by m5james

How are you liking your Eurocharged tune? Why'd you chose them over others? I'm torn between Eurocharged and ESS right now.

What plugs are MSR tunes upgrading to? This is a first I've heard of people using anything other than stock.

The eurocharged tune so far is good. It's not producing the power I thought it would compared to MSR and JB4 Piggy. With MSR Intake, Downpipes, and Muffler Delete, I expected to be at 650RWHP but only ended up at 630 RWHP which is more of a Stage 1 Tune.

The reason I went with eurocharged is because I am in Dallas and they are in Houston. I didn't want to go with someone that wasn't local in fear that if something happens I'll be stranded and have to ship my DME.

Personally, if I have to ship my DME, I would be going with MSR or BR.

Spark Plugs are recommended for higher boost applications. I know others are just re-gapping their plugs while others are going for a colder plug. Getting over 650 RWHP requires more boost.

[Tanin]

Originally Posted by Misfired Cylinder

Here is my honest opinion:

- Stay away from downpipes if the car is a daily driver and/or you have a family. The smell is there and it will be very visible to everyone. You don't want your kids inhaling those fumes.

I went with hi flo catted DP's for this reason. I gave up slight hp/tq gains compared to non catted but "0 smell".

IMO DP's should be on your shortlist. The performance gains and improved engine tone are indisputably rewarding.

[m5james]

Originally Posted by 13M5F10

The eurocharged tune so far is good. It's not producing the power I thought it would compared to MSR and JB4 Piggy. With MSR Intake, Downpipes, and Muffler Delete, I expected to be at 650RWHP but only ended up at 630 RWHP which is more of a Stage 1 Tune.

The reason I went with eurocharged is because I am in Dallas and they are in Houston. I didn't want to go with someone that wasn't local in fear that if something happens I'll be stranded and have to ship my DME.

Personally, if I have to ship my DME, I would be going with MSR or BR.

Spark Plugs are recommended for higher boost applications. I know others are just re-gapping their plugs while others are going for a colder plug. Getting over 650 RWHP requires more boost.

Stupid reason, but I like Eurocharged's logo better, but it seems most of these tuners are within a certain range of each other. ESS has been replying like clockwork while Eurocharged replies have been hit or miss...both say they're the best of the best, so it's hard to decide. I've got downpipes and will be doing my muffler delete soon...all while entertaining meth/JB4.

No tuners are located near me, but I started leaning towards ESS because they're in CA and I could visit them for updates/revisions while down there for my yearly Bimmerfest trip.

At what PSI are people either gapping or switching to different plugs? Any idea what the plug number is?

[m5james]

Originally Posted by Tanin

I went with hi flo catted DP's for this reason. I gave up slight hp/tq gains compared to non catted but "0 smell".

IMO DP's should be on your shortlist. The performance gains and improved engine tone are indisputably rewarding.

I've got the worst sense of smell, so my opinion is slightly useless, but I can rarely smell it...idling in the garage, ALL the windows down at a light, etc. I figured it's no worse than when I had a Chevelle SS back in my post college days.

I noticed the turbo sounds immediately upon installing catless downpipes. It sounds like the spool is coming from my dashboard, I can hear the BOV just that much more and I'm sure it sounds even more pronounced outside.

[MCarsFan]

Originally Posted by 13M5F10

The eurocharged tune so far is good. It's not producing the power I thought it would compared to MSR and JB4 Piggy. With MSR Intake, Downpipes, and Muffler Delete, I expected to be at 650RWHP but only ended up at 630 RWHP which is more of a Stage 1 Tune.

The reason I went with eurocharged is because I am in Dallas and they are in Houston. I didn't want to go with someone that wasn't local in fear that if something happens I'll be stranded and have to ship my DME.

Personally, if I have to ship my DME, I would be going with MSR or BR.

Spark Plugs are recommended for higher boost applications. I know others are just re-gapping their plugs while others are going for a colder plug. Getting over 650 RWHP requires more boost.

We will get there.. I expect in the end I'll be running RPi downpipes and the MSR intake..lol then the difference will be BR vs MSR..

[13M5F10]

Originally Posted by m5james

Stupid reason, but I like Eurocharged's logo better, but it seems most of these tuners are within a certain range of each other. ESS has been replying like clockwork while Eurocharged replies have been hit or miss...both say they're the best of the best, so it's hard to decide. I've got downpipes and will be doing my muffler delete soon...all while entertaining meth/JB4.

No tuners are located near me, but I started leaning towards ESS because they're in CA and I could visit them for updates/revisions while down there for my yearly Bimmerfest trip.

At what PSI are people either gapping or switching to different plugs? Any idea what the plug number is?

@m6beast may be the best guy to answer the plug question. I assume it's all based on logging done over time that has lead to the change in plugs which then showed better response.

My best advice is get dyno sheets and ask for references. At the end of the day that's what it comes down too.

I agree about the customer service, it isn't there with EC. That's something that you will have to consider especially since you are not local.

Since neither ESS nor Euro are close to you, you should look into the Stage 2 MSR tune. The customer service is amazing, George is extremely knowledgable and they have done a ton of real world testing on their tune before releasing it. Also they are producing amazing numbers.

[m5james]

MSR isn't near me either, he makes M5 intakes and tunes...he'd have replied if he made X5M stuff by now.

[Dansc]

Picked up my car today!!
Really nice and I ran against my RS6 with around 700hp. The M5 was actually a little little bit faster from 100-250 km/h.
Now over the winter I will work on modifying it.
This will be fun!