[alecm2]

Hey everyone, I plan on going stage 2 on my N55 (93 octane only) and plan on using Bootmod3 , if you have other suggestions please let me know!! Anyways I was going to run
BMS intake
VRSF downpipe and fmic and chargepipe
Not sure which spark plugs to run?

Is there anything else I should have? Diverter valve? Turbo inlet? new to bmw tuning so sorry if these are noob questions , thanks for your time !

[VisualEcho]

Stage 2 only requires an upgraded IC, but the charge pipe is smart, as is the DP.

The only thing I'd say is to definitely check your logs after doing the 93 tune, as some guys have reported not quite getting 93 at the pump, and some timing being pulled.

I'm a set-it and forget-it type of guy, so I'll be doing the upgrades, but flash the 91 tune for safety reasons.

[alecm2]

Originally Posted by VisualEcho

Stage 2 only requires an upgraded IC, but the charge pipe is smart, as is the DP.

The only thing I'd say is to definitely check your logs after doing the 93 tune, as some guys have reported not quite getting 93 at the pump, and some timing being pulled.

I'm a set-it and forget-it type of guy, so I'll be doing the upgrades, but flash the 91 tune for safety reasons.

Thanks for the info, so might be smart to flash 91 but run 93?

[VisualEcho]

Originally Posted by alecm2

Thanks for the info, so might be smart to flash 91 but run 93?

Yeah, that's exactly right.

Most guys will just check their logs. I can't be bothered. Another few hp isn't going to make or break me. I'd rather have the extra security. At some point I'll get a custom tune just for the sake of having it.

[PackPride85]

Originally Posted by VisualEcho

Stage 2 only requires an upgraded IC, but the charge pipe is smart, as is the DP.

The only thing I'd say is to definitely check your logs after doing the 93 tune, as some guys have reported not quite getting 93 at the pump, and some timing being pulled.

I'm a set-it and forget-it type of guy, so I'll be doing the upgrades, but flash the 91 tune for safety reasons.

Stage 2 does require DP along with IC...at least according to PTF.

[VisualEcho]

Originally Posted by PackPride85

Stage 2 does require DP along with IC...at least according to PTF.

Stage 2 91 octane should not require a DP if you're running 93. If this is the case, PTF would need to be ultra specific as to how many cells are allowed, as there are a myriad of DP's available on the market, and we know that a cat-less system is not required.

But in any case, the OP is running a VRSF DP.

[PackPride85]

Originally Posted by VisualEcho

Stage 2 91 octane should not require a DP if you're running 93. If this is the case, PTF would need to be ultra specific as to how many cells are allowed, as there are a myriad of DP's available on the market, and we know that a cat-less system is not required.

But in any case, the OP is running a VRSF DP.

All Stage 2 maps require a DP and IC. Nothing to do with dp cells or octane. Load targets and boost ceiling is higher for both maps than S1 and running on stock downpipes is just creating a giant restriction and higher EGTs.

[AmuroRay]

Go with a stage 2 IC, skip the BMS intake.

[nioh_lbbm2]

Originally Posted by VisualEcho

Stage 2 91 octane should not require a DP if you're running 93. If this is the case, PTF would need to be ultra specific as to how many cells are allowed, as there are a myriad of DP's available on the market, and we know that a cat-less system is not required.

But in any case, the OP is running a VRSF DP.

PTF states and I quote" high flow downpipes" required along with FMIC for Stage 2.

anything from 300CPI and below are considered high flow downpipes for the N55.

[mike@x-ph.com]

Originally Posted by alecm2

Hey everyone, I plan on going stage 2 on my N55 (93 octane only) and plan on using Bootmod3 , if you have other suggestions please let me know!! Anyways I was going to run
BMS intake
VRSF downpipe and fmic and chargepipe
Not sure which spark plugs to run?

Is there anything else I should have? Diverter valve? Turbo inlet? new to bmw tuning so sorry if these are noob questions , thanks for your time !

Nothing else is mandatory, but the inlet is a plus

use the 1 step colder NGK

[VisualEcho]

Originally Posted by PackPride85

All Stage 2 maps require a DP and IC. Nothing to do with dp cells or octane. Load targets and boost ceiling is higher for both maps than S1 and running on stock downpipes is just creating a giant restriction and higher EGTs.

First, I know guys running BM3 stage 2 91 octane map (using 93) with no supporting mods whatsoever. Second, your comment about nothing to do with octane and # of cells make no sense when you talk about restrictions and EGT's.

Originally Posted by nioh_lbbm2

anything from 300CPI and below are considered high flow downpipes for the N55.

Which is every aftermarket DP available for the N55. So they're basically saying anything other than the stock DP. Got it.

[PackPride85]

Originally Posted by VisualEcho

First, I know guys running BM3 stage 2 91 octane map (using 93) with no supporting mods whatsoever. Second, your comment about nothing to do with octane and # of cells make no sense when you talk about restrictions and EGT's.




Which is every aftermarket DP available for the N55. So they're basically saying anything other than the stock DP. Got it.

LOL nothing will physically stop you from running stage 2 maps on a stock car. Hell you can use the tuning feature to increase the max load to infinity if you want. PTF's recommendations are based on getting reliable power without the car having to pull timing, overheat, damage equipment (I.e. turbo), etc...

For the downpipe, no one is going to be selling an aftermarket one that, at minimum, doesn't have a hi flow cat. That would be pointless and if you did buy one you got scammed.

[GeraldM2]

Originally Posted by mike@x-ph.com

Nothing else is mandatory, but the inlet is a plus

use the 1 step colder NGK

What Mike said. Turbo inlet and diverter valve help. The stock diverter valve has been known to leak some boost so upgrading that will help mitigate some of those issues. The turbo inlet pipe upgrade is similar to the charge pipe upgrade, it can crack, and the fitting to the turbo can get loose.

[Happy Motoring]

Originally Posted by VisualEcho

Stage 2 only requires an upgraded IC, but the charge pipe is smart, as is the DP.

The only thing I'd say is to definitely check your logs after doing the 93 tune, as some guys have reported not quite getting 93 at the pump, and some timing being pulled.

I'm a set-it and forget-it type of guy, so I'll be doing the upgrades, but flash the 91 tune for safety reasons.

This is exactly what I did for the same reason

[VisualEcho]

Originally Posted by PrinceCity

Your logic makes zero sense and is completely silly when it's consistently applied. Bm3 would not require an intercooler either if they must specify how many cooling fins are needed

Zero sense, and completely silly?

Hold on there partner.

Intercoolers and catalytic converters aren't nearly the same thing. You're applying the idea of one part to a completely different part.

Beyond that, most everyone knows the stock intercooler leaves much to be desired. It's not a must-have for a stock car, but it's definitely a good thing to have. It's really the weak link, which is why it's required for Stage 2.

[Bee Pee]

Originally Posted by GeraldM2

The turbo inlet pipe upgrade is similar to the charge pipe upgrade, it can crack, and the fitting to the turbo can get loose.

Hi Gerald - didn't know oem turbo inlet pipe was frail in the same way as oem CP ?

I upgraded turbo inlet pipe to remove the restriction due to the oem inlet ID where it mates to the turbo is smaller than the port to the std turbo comp wheel. Better flow at inlet means faster spool and turbo's wastegate duty cycle is less for same/similar levels of boost.

BP