Chappy

Does anyone have a nitrous setup on their M157?

TTMerc

I hope someone chimes in!

loungn14

we have quite a few customers that have added nos.

Is it a question of nos vs tune or just a generic question?

TTMerc

This is on the M157 platform? What is your suggestion as far as setup when fitting on that platform? Pre or post turbo? Wet or Dry? What have you seen work on the M157?

I'm guessing he is saying running a 100 shot instead of tune so the kit can be taken off for dealership visits leaving no aftermarket attachments like an ECU tune. Just guessing though.

Chappy

Yes, correct thanks for reading into that.

gaspam

i've heard 75 shot or smaller is fine with no adjustment and just colder plugs on most platforms but never tried it on a merc.... seems everything with our cars is more of a pita and wonky when it comes to ecus.... i say start off with a 50 shot on a dyno day while monitoring afr and work your way up... going bigger than a 100 shot probably want to start pulling a few degrees of timing to be safe, but then the dealer would know you are tampering with the ecu which is what i think you are trying to avoid

on dsm and and mustangs i've seen people running 150 shots on stock tune and colder plugs, but then again that is on n/a motors.. on f/i motors the shot would probably be a little smaller since the f/i amplifies the effect of the shot

Chappy

I searched youtube last night and could not find any M157 powered E63s videos running spray. I figured if someone has NOS, they would put up a clip or two.

KLR CLS

You can run a wet shot system, with stand alone secondary fuel system but would have to tap the manifold after the inter cooler to ensure appropriate fuel distribution. With stand alone fuel system, you don;t have to worry about fuel pressure or tapping stock tank. Remember that on turbo cars alittle n2o goes along way! I've see 75hp jetting make over 120whp on some cars.

link to stand alone fuel enrichment systems:
http://www.nitrousexpress.com/15004-...-methanol.html