2012 guys, what tune are you running?

[loesch]

Originally Posted by Socal_Aviator

Have you had any idle issues running the Dinan Stage 2 flash combined with your downpipes?

There is a lengthy thread on this site about people with downpipes and stalling/idle problems. I am considering a Dinan stage 2 with cat back exhaust and downpipes but that thread made me very worrisome.

I love downpipes on turbo cars but the fact that most piggy back systems and Dinan do not incoporate software to compensate for downpipes worries me. Adding downpipes to a turbo car changes the flow characteristics and air fuel ratios quite a bit which combined with a software "flash" that doesnt take this into effect can lead to lean mixture right?

On my Nissan GTR, adding downpipes made a HUGE change to air flow and this required large changes to injector flow to compensate for a safe air fuel ratio otherwise the car will run extremely lean. Downpipes= tune mandatory. I know these are two totally different cars but how do you compensate for the downpipes?

The DME in these cars compensates for all kinds of intake and exhaust flow changes. It has set targets for AFR and will compensate to keep the engine within range. That's why we need a flash when we start pushing lots of boost. The DME still thinks we should be having an AFR of 15.5 tapering to 13 when we should be more like 13.5 tapering to 12. I'm not sure where the rough idle stuff is coming from with DPs. I didn't notice any difference.

[Socal_Aviator]

Originally Posted by loesch

The DME in these cars compensates for all kinds of intake and exhaust flow changes. It has set targets for AFR and will compensate to keep the engine within range. That's why we need a flash when we start pushing lots of boost. The DME still thinks we should be having an AFR of 15.5 tapering to 13 when we should be more like 13.5 tapering to 12. I'm not sure where the rough idle stuff is coming from with DPs. I didn't notice any difference.

thanks for the explanation. In the GTR world once downpipes are added a custom dyno tune/e-tune and bigger injectors is mandatory as the Ecu can only compensate 20% max in any direction.

So people with Dinan software tunes compensate for downpipes just by letting the car's DME compensate for the added flow? I understand JB4 already has the compensation built in but how do DInan people get away with it and also get rid of the CEL light?

[NORAGRETS]

Originally Posted by Socal_Aviator

Have you had any idle issues running the Dinan Stage 2 flash combined with your downpipes?

There is a lengthy thread on this site about people with downpipes and stalling/idle problems. I am considering a Dinan stage 2 with cat back exhaust and downpipes but that thread made me very worrisome.

I love downpipes on turbo cars but the fact that most piggy back systems and Dinan do not incoporate software to compensate for downpipes worries me. Adding downpipes to a turbo car changes the flow characteristics and air fuel ratios quite a bit which combined with a software "flash" that doesnt take this into effect can lead to lean mixture right?

On my Nissan GTR, adding downpipes made a HUGE change to air flow and this required large changes to injector flow to compensate for a safe air fuel ratio otherwise the car will run extremely lean. Downpipes= tune mandatory. I know these are two totally different cars but how do you compensate for the downpipes?

None what-so-ever...runs perfectly aside from the SES light caused by the catless DP. I have a JB Can Tool set on auto clear for that though...only pain in the ass is inspection...because im 2012 I cant find jack shit that will allow me to bypass the 02 and catalyst monitor "ready" status on the OBD2 test...

No problems with the set up though.

Oh and it sounds MEANNNN. I get a ton of compliments. And I also get a few people who think its obnoxious...

I have the Berk resonated mid pipes on now, before I had the n-55 mids w/o resonators and it was just stupid drone on the highway and startups set off car alarms in my garage...planning on putting another resonator just after the DP or between the mids and the cat-back

[NORAGRETS]

Originally Posted by loesch

The DME in these cars compensates for all kinds of intake and exhaust flow changes. It has set targets for AFR and will compensate to keep the engine within range. That's why we need a flash when we start pushing lots of boost. The DME still thinks we should be having an AFR of 15.5 tapering to 13 when we should be more like 13.5 tapering to 12. I'm not sure where the rough idle stuff is coming from with DPs. I didn't notice any difference.

agreed

[Socal_Aviator]

Originally Posted by Twhill19

None what-so-ever...runs perfectly aside from the SES light caused by the catless DP. I have a JB Can Tool set on auto clear for that though...only pain in the ass is inspection...because im 2012 I cant find jack shit that will allow me to bypass the 02 and catalyst monitor "ready" status on the OBD2 test...

No problems with the set up though.

Oh and it sounds MEANNNN. I get a ton of compliments. And I also get a few people who think its obnoxious...

I have the Berk resonated mid pipes on now, before I had the n-55 mids w/o resonators and it was just stupid drone on the highway and startups set off car alarms in my garage...planning on putting another resonator just after the DP or between the mids and the cat-back

If I choose to install downpipes with a Dinan Stage 2 tune what do you think about using an O2 emulator/simulator to prevent the CEL (SES) light from coming on? Www.magnumtuning.com sells one for 70 bucks. Will that or something similar remove the SES light?

[AyJay87]

Just ppk1 for now. Would love to move on to a Dinan tune in the future. But I may try FBO next.

[NORAGRETS]

Originally Posted by Socal_Aviator

If I choose to install downpipes with a Dinan Stage 2 tune what do you think about using an O2 emulator/simulator to prevent the CEL (SES) light from coming on? Www.magnumtuning.com sells one for 70 bucks. Will that or something similar remove the SES light?

Im trying to do that now...my service advisor actually was the one who suggested it haha. I havent really looked into it enough...just briefly, but I havent seen anyone who has done it successfully on our cars...

Im interested in doing it though...maybe we can be the 1st's

[Socal_Aviator]

Originally Posted by Twhill19

Im trying to do that now...my service advisor actually was the one who suggested it haha. I havent really looked into it enough...just briefly, but I havent seen anyone who has done it successfully on our cars...

Im interested in doing it though...maybe we can be the 1st's

Call me OCD but there is no way I will allow my wife's daily driver to be driven around with a check engine light on all the time. What if a "real" more serious issue arises but we don't know about it because CEL is already on from an aftermarket downpipe. I might just skip the DP alltogether if I don't get any definitive answers.

Seems like the technology evolution has been a bit slow on this car. The GTR world is running 7sec 1/4 miles and 1000hp/torque builds for less than 20k and we're still sitting here wondering how to make a CEL go away for a downpipe.

Either way Im determined to find an easycheap solution. A member a few posts back mentioned something about a unit that does the job

[NORAGRETS]

Originally Posted by Socal_Aviator

Call me OCD but there is no way I will allow my wife's daily driver to be driven around with a check engine light on all the time. What if a "real" more serious issue arises but we don't know about it because CEL is already on from an aftermarket downpipe. I might just skip the DP alltogether if I don't get any definitive answers.

Seems like the technology evolution has been a bit slow on this car. The GTR world is running 7sec 1/4 miles and 1000hp/torque builds for less than 20k and we're still sitting here wondering how to make a CEL go away for a downpipe.

Either way Im determined to find an easycheap solution. A member a few posts back mentioned something about a unit that does the job

the auto clear setting on JB4's and the BMS can tool just eliminates the SES light from the DP...if something ELSE serious happens, regardless if auto clear is on, the light will STILL come on...it has no effect on the lights

i mean...a GTR is a GTR...Japanese cars have TONS of parts that are usually cheaper...european cars, at least bmw's, the newer models are coded to frustrate tuners and all that jazz...emission rules in the EU are strict and thats part of the reason...at least to my knowledge

[Socal_Aviator]

Originally Posted by Twhill19

the auto clear setting on JB4's and the BMS can tool just eliminates the SES light from the DP...if something ELSE serious happens, regardless if auto clear is on, the light will STILL come on...it has no effect on the lights

i mean...a GTR is a GTR...Japanese cars have TONS of parts that are usually cheaper...european cars, at least bmw's, the newer models are coded to frustrate tuners and all that jazz...emission rules in the EU are strict and thats part of the reason...at least to my knowledge

Thanks for the explanation. Can the BMS tool to clear the code work in conjunction with a Dinan software tuning solution?

Yeah it appears the BMW ecu hacking is a whole different world of complexity. Glad to know there are still ways to tune. Im shocked there are so few people with real custom dyno tunes. Most people driving around with off-the -shelf maps. Pretty cool that the OEM computer can compensate so much.

[loesch]

Originally Posted by Socal_Aviator

Thanks for the explanation. Can the BMS tool to clear the code work in conjunction with a Dinan software tuning solution?

Yeah it appears the BMW ecu hacking is a whole different world of complexity. Glad to know there are still ways to tune. Im shocked there are so few people with real custom dyno tunes. Most people driving around with off-the -shelf maps. Pretty cool that the OEM computer can compensate so much.

The 2012+ ECUs haven't been cracked by tuners yet so lots of the variables aren't able to be altered just yet. The best tunes so far seem to be the piggy back tunes that fake the inputs so tons of boost can be made. These mostly ride off the knock sensors so there isn't much tuning involved really.

[Socal_Aviator]

Originally Posted by loesch

The 2012+ ECUs haven't been cracked by tuners yet so lots of the variables aren't able to be altered just yet. The best tunes so far seem to be the piggy back tunes that fake the inputs so tons of boost can be made. These mostly ride off the knock sensors so there isn't much tuning involved really.

Sheesh.."riding off the knock sensors?" My experience with tuning only comes from the Nissan world and as far as I have been told by tuners even 1% knock detection is unacceptable. 0 knock value is the only acceptable value.

[aloksatoor]

ANy idea when the cobb tune for the 2012 plus cars is gonna arrive?

[sparkyblue]

Cobb Tuned for 3+ years now, zero tune related issues.

First Stage1, then Stage2, then Stage 2+.

[NORAGRETS]

Originally Posted by aloksatoor

ANy idea when the cobb tune for the 2012 plus cars is gonna arrive?

never....

[aloksatoor]

Spoke to their support, seems like my car squeaked through, the model year was 2012 but built in 2011 nov so it had the compatible DMU.

[Socal_Aviator]

I stopped by Cobb earlier this week and was delighted to find out their software is supported by my car (2012 built in 2011). So stoked!

Just did the Stage 1 flash. Definite improvement in performance.

[davis449]

Originally Posted by aloksatoor

Spoke to their support, seems like my car squeaked through, the model year was 2012 but built in 2011 nov so it had the compatible DMU.

I stopped by Cobb earlier this week and was delighted to find out their software is supported by my car (2012 built in 2011).

I have a July 2011 build date, so I will be going Cobb as well when I am ready to tune.

[excesss]

Originally Posted by sparkyblue

Cobb Tuned for 3+ years now, zero tune related issues.

First Stage1, then Stage2, then Stage 2+.

Did you use the tune that came with the Cobb or did you have a custom tune?

Because of this thread, I just realized that I might have an option other than the Dinan. The build date for my 2012 is 05/2011!

[aloksatoor]

Originally Posted by excesss

Did you use the tune that came with the Cobb or did you have a custom tune?

Because of this thread, I just realized that I might have an option other than the Dinan. The build date for my 2012 is 05/2011!

you can mail cobb ur vin number and they can tell u.

[BEAR-AvHistory]

Originally Posted by Twhill19

so, have you dyno'ed or 1/4 mile'd the car w the stage 3? interested to see how it stacks up...

obviously the torque #'s are good for off the line and acceleration, but the hp cant be THAT different

There is a Dinan Sage 3 run on Drag Times right behind a JB4 tune only run. Both are 335is. generally 12.5 but the Dinan was down on power 114 to 108mph. It is one of the only stage 3 runs I have seen posted. Have not noticed any Stage 2 runs posted.

Nope, I have not dynoed or 1/4 miled the car and do not ever plan to. The Dinan specs I quoted for you are straight from the Dinan website. I would think they are accurate.

Unfortunately this looks to be pretty common for Dinan tunes. People want to take Dinan as promotional advertising as gospel & are unwilling to put it to the test. Maybe with the amount invested its better not to know.

[NORAGRETS]

Originally Posted by BEAR-AvHistory

There is a Dinan Sage 3 run on Drag Times right behind a JB4 tune only run. Both are 335is. generally 12.5 but the Dinan was down on power 114 to 108mph. It is one of the only stage 3 runs I have seen posted. Have not noticed any Stage 2 runs posted.

Unfortunately this looks to be pretty common for Dinan tunes. People want to take Dinan as promotional advertising as gospel & are unwilling to put it to the test. Maybe with the amount invested its better not to know.

I ran my Dinan stage 2 about 20 times at the track. It's a bad track and ALWAYS hard to hook up...

My best was a 12.7xx or a 12.6xx I forget...let's call it 12.7. Other than that was generally 13.000-13.5xxx. MPSS and all the goodies in my signature on the car.

Want to take another crack at it with stage 3 in the next few weeks...also had a short shifter put in recently and planning for an OS gliken LSD so hoping those add ons bring me down to consistent 12.5xx range or maybe below...