[Minty_]

Seems like everyone with a downpipe is using a JB4. I currently have a 2013 F30 335i (PWG) with a intake and JB Stage 1. I was going to get a ER catless downpipe mostly for the sound. I don't plan to race my car or use higher than a 91 octane (I live in shitty Cali) / E85 fuel or mess around with the different MAP settings.

Should I Just get one of those CEL-fix adapters after getting my downpipe installed, or is that just stupid and I should go all out and buy a JB4 to replace the Stage 1? Anyone else NOT using a JB4 with a downpipe?

[mbanks21]

I'm not an expert but does the stage 1 have the ability to optimize the use of the downpipe? Meaning are you going to spend $3-400 on a downpipe and not be able to use it to its potential because of tuning?

[Minty_]

Originally Posted by mbanks21

I'm not an expert but does the stage 1 have the ability to optimize the use of the downpipe? Meaning are you going to spend $3-400 on a downpipe and not be able to use it to its potential because of tuning?

That's the main question I have as well. I see many are running their JB4 with Map 2 setting which is +6psi and ideal for downpipe with 93 octane. I only get 91 octane and the Stage 1 is +3.5psi standard. Other than the obvious difference in psi I wonder if there's any other "optimizations" a JB4 will get me in my situation. I also have a PWG so I don't believe I can take advantage of the EWG features.

[mbanks21]

Is there a reason you don't want to get a JB4? I had stage one and ended up selling it for like $250 and bought a used JB4 for around $300. Even without 93/E85 I'd prefer the JB4

[jgoens]

Originally Posted by Phorbo216

Part of it is that my car is a PWG not EWG which involves needing to connect 3 additional wires (blue patch for boost solenoid, power wire, and ground wire), more work removing the under panel to connect the OBDII CANbus wires (otherwise map settings will default to map 1 which is similar to my Stage 1 now). All this means more risk of things to go wrong w/o much added benefit that I will use. Stage 1 is much easier to uninstall when needed for a service check.

I'm on my second jb4...you know once your in there connecting the extra wires are not that big of a deal. I'm pwg as well. The ground wire and boost solenoid are the easy ones in my opinion. The ff wires take a little maneuvering but the tmap one is the most annoying. JB4 will give you much better options: logging, e85 use, higher boost, exhaust flap control. The OBDII canbus wire was not hard as well. I have taken my car in for regular service and non engine warranty work and left my jb4 in.

[GEvans85]

Originally Posted by Phorbo216

Understood, but none of that stuff I will really need or use. Higher boost can be cool but I'm pretty satisfied with the current 3.5psi boost as is. Other than that I can't think of any other reasons, hence my dilemma.

I have stage 1 and downpipes on my car. Im not sure if the stage 1 utilizes the downpipes to its full potential, but I can tell you it runs better with the downpipes and sounds great. If you don't mind the CEL and smelling like a go-kart, go for it.

[MMOTION]

Originally Posted by GEvans85

I have stage 1 and downpipes on my car. Im not sure if the stage 1 utilizes the downpipes to its full potential, but I can tell you it runs better with the downpipes and sounds great. If you don't mind the CEL and smelling like a go-kart, go for it.

Curious as to how you liking this setup? Which brand DP did you go with and have you considered the Big Daddy mini cat CEL fix?

[Mike@N54Tuning.com]

Originally Posted by GEvans85

I have stage 1 and downpipes on my car. Im not sure if the stage 1 utilizes the downpipes to its full potential, but I can tell you it runs better with the downpipes and sounds great. If you don't mind the CEL and smelling like a go-kart, go for it.

Even with stage1 downpipes will give you a much more responsive car as the turbo spool up will be quicker.

You can always plug in the BMS CanFlap Module to take care of the CEL.

Mike

[mike@x-ph.com]

Originally Posted by Phorbo216

Seems like everyone with a downpipe is using a JB4. I currently have a 2013 F30 335i (PWG) with a intake and JB Stage 1. I was going to get a ER catless downpipe mostly for the sound. I don't plan to race my car or use higher than a 91 octane (I live in shitty Cali) / E85 fuel or mess around with the different MAP settings.

Should I Just get one of those CEL-fix adapters after getting my downpipe installed, or is that just stupid and I should go all out and buy a JB4 to replace the Stage 1? Anyone else NOT using a JB4 with a downpipe?

Sounds like a plan, get a catless downpipe + the VRSF CEL FIX

[ClevelandBeemer]

Originally Posted by Phorbo216

Part of it is that my car is a PWG not EWG which involves needing to connect 3 additional wires (blue patch for boost solenoid, power wire, and ground wire), more work removing the under panel to connect the OBDII CANbus wires (otherwise map settings will default to map 1 which is similar to my Stage 1 now). All this means more risk of things to go wrong w/o much added benefit that I will use. Stage 1 is much easier to uninstall when needed for a service check.

All of those wires are a easy. The difficult wire is the OBDII connection through the firewall if your car is stick. There's absolutely no room to get that connector through.

[Minty_]

Originally Posted by mike@x-ph.com

Sounds like a plan, get a catless downpipe + the VRSF CEL FIX

Thanks, good to know...I didn't realize VRSF came out with a CEL fix. Do they sell this product separately, and if so does it work with an ER downpipe?

[mbanks21]

Originally Posted by ClevelandBeemer

All of those wires are a easy. The difficult wire is the OBDII connection through the firewall if your car is stick. There's absolutely no room to get that connector through.

You are not kidding. I ending up ripping the connector off and having to splice it. Not fun

[mike@x-ph.com]

Originally Posted by Phorbo216

Thanks, good to know...I didn't realize VRSF came out with a CEL fix. Do they sell this product separately, and if so does it work with an ER downpipe?

DP fix should work with any downpipe

VRSF do not have it listed on their website separate but i can get it for you

[ClevelandBeemer]

Originally Posted by mike@x-ph.com

DP fix should work with any downpipe

VRSF do not have it listed on their website separate but i can get it for you

I'm thinking about going with a VSRF DP. How does the DP fix work? Also would I need to even worry about having the DP fix? I'm an area that has e-check so I just want to know I'm covered.

[mike@x-ph.com]

Originally Posted by ClevelandBeemer

I'm thinking about going with a VSRF DP. How does the DP fix work? Also would I need to even worry about having the DP fix? I'm an area that has e-check so I just want to know I'm covered.

I cant give you any advice on how to illegally pass emission tests, but the DP fix will trick your ECU into thinking that the cats are still there

[MMOTION]

Originally Posted by mike@x-ph.com

DP fix should work with any downpipe

VRSF do not have it listed on their website separate but i can get it for you

VRSF has it as a $99.99 option when you go to the DP link. What exactly is it, and is it guaranteed to work?

[jgoens]

Originally Posted by MMOTION

VRSF has it as a $99.99 option when you go to the DP link. What exactly is it, and is it guaranteed to work?

Just saw that..yeah I want to know about this and hoping we get input from anyone who has used it and passed emissions--would well be worth the price compared to doing a DP swap.

[mike@x-ph.com]

Originally Posted by MMOTION

VRSF has it as a $99.99 option when you go to the DP link. What exactly is it, and is it guaranteed to work?

It will hide the code