E60714

I think with my current budget, big mods like the JB3 are useless without eventually adding on even more mods like the RPi exhaust, upgraded intercooler and BOV. So I decided I would do small mods that would all be under $300. I decided on this:

Some type of air filter. K&N, Burger Motorsports, or BMC
RPi scoops, of course
and then finally some type of an intake upgrade. The problem with this is at first I was thinking some regular CAI like K&N. Haven't checked if they made one for a 535, but that was my choice. Then I heard of the Burger Motorsport DCI, which I just assumed was "better" since it was a bit more. Now I read DCI detract from power, but improve the noise. I'm not that power hungry, but spending $150+ to lose power and sound better? I don't think it's worth it. So for this last mod, is a DCI worth it? A regular CAI, are they out there? Worth it?

v_therussian

IMO spending money on mods that result in losing power is ridiculous, dude - that's like a step down from throwing money away

Air filter - BMC is definitely the best filter.

For CAI - and I'm not sure how it works on the turbo engine - I'd go with either RPi or Dinan

theXman

To breathe better with a budget, get RPI scoop and BMC filter. And you're done

Gene

Don't waste your time on an open cone CAI set-up....youll end up throwing even more limp codes due to the hot air being sucked into the Turbo's..


go with the Scoop and Filter set-up.... the BOV would be a good choice if you decide to run a meth kit....

like this member...

https://5series.net/forums/index.php...opic=68094&hl=

dbae1978

+1 with Gene, the dual cone air intakes will result in a loss of power, due to heat soak. The best way to make power is to use the stock box with a drop in bmc or helene drop in filter. Of course you would want to add the RPI scoops. All high performance vehicles utilize a box configuration air filter system. if the open air intakes actually produced power, why wouldn't the automobile manufacturers just make them that way from the get go?

As for the charge pipe/blow off valve, you will loose power unless you are going with a water/meth system. there aren't any intercoolers or down pipes for the 535i. although the 335 intercoolers should be the same, the 535i has oil lines that are hard lined in front of the intercooler. by installing an intercooler you may void your warranty or cause greater problems with the oil cooler.

If you are interested in the RPi GT Race Exhaust there is a group buy going on. Please check the link below:

https://5series.net/forums/index.php?showto...p;mode=threaded

please pm member RPi Power or Michell@RPI for more detail. You can also visit their website: www.raceprecision.com

E60714

I'm on a budget, so no exhaust, and I mentioned the BOV as an example of the type of mod that would come as a result of installing a JB3 or complementing the downpipes, exhaust, etc. that would come with the more expensive mods. I wasn't planning on simply upgrading the BOV just like that.

Anyone have any experience with the BMS filter? I know BMC is big on here, but haven't heard much about the one from BMS, the ones that made the JB3. Any idea?

Gene

Dbae HAD the BMS DCI....MacFly also had a DCI set-up

like any other open cone intake set-up...both ended up throwing limp codes due to the heat soak along with a loss in power....while the boys over on n54tech may say different regarding temp changes and heat soak....I'd go with personal experience from your fellow e60/N54 engine drivers....:thumsup:

John@Motorcepts

RPi scoop. Or go all out and get a big intercooler, cone type intake, and remap the crap outta the ECU. Or give the car asthma spray to let it breather better

Honestly, JB3 HELPS even without the exhausts and everything. Can't do a BOV. If you recirc to atm, you'll EFF the car's ECU signals and run weird. You have to recirc. If you want the BOV sound, get an open air intake and you'll hear it. You might hear it with a drop in filter but I cant confirm it.

Gene

you can't do a BOV, really? Did you check the link I posted above...

member My535i may beg to differ

here's the link again since you missed it the first time

https://5series.net/forums/index.php...opic=68094&hl=

Gene

AFAIK, Dinan does not offer an intake set-up for the N54 engine...