Downpipe and Software recommendations

SR20_Guy

New member
I'm sure these have been discussed a lot before, but in short, which are good downpipe and software options to go for on the n55? or 335 in general.

MP expires early next year and I'm thinking of getting a DP, AFE or K&N flat panel filter and JB4 / Excede or something. But there are off course so many options. This is my daily drive, so not looking for crazy power, but it definitely needs something....
 

135iguy

New member
I did a Powerflow Downpipe and full exhaust on my N55 135i. Best bang for buck IMHO @ R7500
On n55, it's JB4 or bust from my research
 

KrS24

///Member
TMSS for the DP. Depending what you want from your car you should consider a JB4 or a software tune.
 

SR20_Guy

New member
Thanks for all the feedback guys. Much appreciated. Will start contacting suppliers mentioned.

Any suspension upgrades? The car does not handle fantastic in my opinion. Used to drive a Nissan Z before and I feel bordeline unsafe around bends in this car... Can only imagine when it has more power. Maybe it's the runflats I dunno, but it jolts if you hit the smallest imperfection in the road on a bend. I would be keen to ditch the runflats and go for slightly bigger tyres like the E92 M3 maybe.
 

KrS24

///Member
Lose the run flats. There are a lot of better tyres our there. I personally use toyo's t1 sport. Never looked back. You could look at getting the M performance springs on your car or maybe a set or Eibach.
 

Markus135

New member
What performance gains for down pipe or jb4 ? And more or less what do each cost (ballpark) ? I've got N55 135i.

Is everything a bad idea until MP is over ?
 
Markus135 said:
What performance gains for down pipe or jb4 ? And more or less what do each cost (ballpark) ? I've got N55 135i.

Is everything a bad idea until MP is over ?

if your MP is important to you, then don't risk it with mods, wait until MP runs out
 

SR20_Guy

New member
Can I ask why the charge pipe is necessary? Does the JB4 tune blow the stock plastic one off?

I've had the plastic one break before and it was replaced under MP.

Also, what is the opinion on BMS Intake?
 
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