Roland@pcmtec Posted December 9, 2018 Share Posted December 9, 2018 So to summarise. Set CFC delay to at least 5 seconds. 98 octane use a timing value of ~10-14 E85 you can go much lower. Those of you running much lower timing are you all on e85? Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 9, 2018 Share Posted December 9, 2018 28 minutes ago, Roland@pcmtec said: So to summarise. Set CFC delay to at least 5 seconds. 98 octane use a timing value of ~10-14 E85 you can go much lower. Those of you running much lower timing are you all on e85? I found -15 deg would give me noise on e85 but was only quick testsĀ Quote Link to comment Share on other sites More sharing options...
richardpalinkas Posted December 9, 2018 Share Posted December 9, 2018 I'm running -10 on E85 which is a good burble. Quote Link to comment Share on other sites More sharing options...
Loki Posted December 11, 2018 Author Share Posted December 11, 2018 My final settings for Park/Neutral crackles with ZF transmission. It provides great crackles. It only work best with wave of sparks in BKT. It did not work properly with constant spark over the range of RPM as you see in the photo. You have to lean out mixture in the Fuel map too to enhance the crackles or there are only burbles when it is rich. My 5 years old son worked with me for hours to achieve this. He got tired of REVing the engine in the end lol since I had to be hearing at the back of the car. Cheers Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 11, 2018 Share Posted December 11, 2018 (edited) Got any vids? Edited December 11, 2018 by gelousi Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 11, 2018 Share Posted December 11, 2018 That may screw with your fuel economy doing it at 0.2 load. Datalog at cruise to make sure.Ā Also post a video! Thanks for sharingĀ 1 Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 On 12/7/2018 at 12:22 PM, Roland@pcmtec said: All I did was set the DFCO timer to 10 seconds and it doesn't do a fuel cut unless you are in deaccel conditions for greater than 10s.Ā FG might be different though as this was in a bf.Ā Which table Roland, auF0151? Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 23, 2018 Share Posted December 23, 2018 It was a scalar. I'll look it up next time on the pc.Ā 1 Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 23, 2018 Share Posted December 23, 2018 1 hour ago, Romulus said: Which table Roland, auF0151? auF0151 which is the first scaler under coasting fuel shut off default value 0.5 second Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 Yep, got it. I tried this mod with my Territory, while it does work, the Manta twin 2.5" does such a great job the crackle is almost non existent, even with -5 degrees ignition timing on decel. Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 23, 2018 Share Posted December 23, 2018 6 minutes ago, Romulus said: Yep, got it. I tried this mod with my Territory, while it does work, the Manta twin 2.5" does such a great job the crackle is almost non existent, even with -5 degrees ignition timing on decel. Did you try change spark and torque cut to 0 as posted in previous page?Ā Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 2 minutes ago, gelousi said: Did you try change spark and torque cut to 0 as posted in previous page?Ā Yep I did, the mufflers in the car are massive units which really dampen the exhaust note. 1 Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 23, 2018 Share Posted December 23, 2018 9 minutes ago, Romulus said: Yep I did, the mufflers in the car are massive units which really dampen the exhaust note. Thatās a pain how much decel timing ? Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 Just now, gelousi said: Thatās a pain how much decel timing ? I tried different values - between -15 to +5. It's not that effective anyway with my vehicle, I don't have the range of gears to go through with the 4 speed auto. When you lift off the throttle the rpm drops fairly quickly to under 2000rpm as the torque converter doesn't stay locked like it does in the ZF. Quote Link to comment Share on other sites More sharing options...
gelousi Posted December 23, 2018 Share Posted December 23, 2018 Just now, Romulus said: I tried different values - between -15 to +5. It's not that effective anyway with my vehicle, I don't have the range of gears to go through with the 4 speed auto. When you lift off the throttle the rpm drops fairly quickly to under 2000rpm as the torque converter doesn't stay locked like it does in the ZF. Ahhh yeah that sucks e85 Iām guessing?Ā Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 7 minutes ago, gelousi said: Ahhh yeah that sucks e85 Iām guessing?Ā Nope, just 98 octane. Im not much for disabling spark and torque cuts, they're there for a reason i.e. to stop the BTR from burning itself out during gearshifts. I like the fact I've got the PCM to make a similar exhaust note during gearshift as the FG turbo. I've got a built BTR going in the vehicle the next few weeks, it's going to have to deal with 400-500rwkw depending on fuel type. The trans wont live with torque management zeroed. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 23, 2018 Share Posted December 23, 2018 Care to detail how you got the BTR to fart?Ā Quote Link to comment Share on other sites More sharing options...
Romulus Posted December 23, 2018 Share Posted December 23, 2018 (edited) 39 minutes ago, Roland@pcmtec said: Care to detail how you got the BTR to fart?Ā Not publicly, getting correctĀ calibration settings for the BTR is next to impossible, in fact I'd go so far to say that it's almost non existent. Having looked through all the SCT files going back to 2005 no one's nailed the correct settings,Ā most BTR's failĀ over 280-300rwkw in stock guise, the built ones still destroy clutches and bands. Tuners gave up, theĀ typical comment is the BTR is crap, go get a ZF. That said, the stock BTR in my Territory is about to fail, I can hear rumbling noise in 1st gear. Hopefully the built trans will arrive tomorrow, fit up by the end of the week. Edited December 23, 2018 by Romulus Quote Link to comment Share on other sites More sharing options...
Loki Posted December 27, 2018 Author Share Posted December 27, 2018 I had found out the pop and crackles only happened with low ECT or on cold start. Damn close to get what I want. I got crackles when decel from a hard pull up to 5000rpm other than that it just mute. The Audi and Golf R can get crackles whenever they let go of the pedal. They said some thing about cam timing as well to achieve that, some even mention VE modifications. lol it is not that simple? Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted December 27, 2018 Share Posted December 27, 2018 21 minutes ago, Loki said: I had found out the pop and crackles only happened with low ECT or on cold start. Damn close to get what I want. I got crackles when decel from a hard pull up to 5000rpm other than that it just mute. The Audi and Golf R can get crackles whenever they let go of the pedal. They said some thing about cam timing as well to achieve that, some even mention VE modifications. lol it is not that simple? Sounds like your DFCO is still not disabled. Does it disappear entirely when the engine is hot? Eg completely silent? A good way to test is coast down a long steep hill and check if your L/100km drops to 0 or not. Quote Link to comment Share on other sites More sharing options...
Loki Posted December 31, 2018 Author Share Posted December 31, 2018 On 12/28/2018 at 10:55 AM, Roland@pcmtec said: Sounds like your DFCO is still not disabled. Does it disappear entirely when the engine is hot? Eg completely silent? A good way to test is coast down a long steep hill and check if your L/100km drops to 0 or not. Takes 5 seconds to get down to 0 is that not long enough? I know now it is something to do with fuel. Cold start it is richer for decel. After cold start decel fuel is leaner than lambda 1? Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted January 1, 2019 Share Posted January 1, 2019 Cold start will command 1.05 lambda during a short window, you should datalog when it works and replicate this on the non cold start fuel maps. Quote Link to comment Share on other sites More sharing options...
Loki Posted January 7, 2019 Author Share Posted January 7, 2019 On 1/1/2019 at 5:43 PM, Roland@pcmtec said: Cold start will command 1.05 lambda during a short window, you should datalog when it works and replicate this on the non cold start fuel maps. i got my Decel pop and crackles working fine - Had the AMG shocked running with me today lol. However, the neutral crackles (ZF trans) only works at cold start (ECT less than 40 Celsius). I am so close to Neutral pop and crackles. Please tell me where to tackle. I am sure something to do with AFR but do know how to get lean decel AFR in Park/Neutral after the car had warmed up to temp (82C) Which table, scalar to change for neutral decel AFR to be lean? Quote Link to comment Share on other sites More sharing options...
richardpalinkas Posted January 7, 2019 Share Posted January 7, 2019 Maybe look at the open loop transition tables. See if that helps Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted January 10, 2019 Share Posted January 10, 2019 You just turn off DFCO simple as that. Set the timer to infinity and you will get pops and cracks if your decel spark is low enough. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted January 10, 2019 Share Posted January 10, 2019 FYI you only need to set the fuel cut off timer. auF1265 "Minimum DFSO time delay seconds" set this to something like 8 second. You don't need to mess with any other scalars or tables to disable decel fuel shut off. This parameter is only available in pro and above. If you change this to a large number you should get pops/cracks in all decel conditions until the timer is elapsed. Personally I set it to 8 seconds so if I'm coasting down the free way I don't waste fuel. Quote Link to comment Share on other sites More sharing options...
Zaz3ry Posted April 29, 2019 Share Posted April 29, 2019 On 11/30/2018 at 6:40 PM, gelousi said: Yes rpm cells, you can also add cells and make it go from - to + in 500rpm incriments have to play and see what sounds bestĀ How can I add extra cells? Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted April 29, 2019 Share Posted April 29, 2019 53 minutes ago, Zaz3ry said: How can I add extra cells? You can't, the number of cells is hard coded in the PCM. We do allow adding more rows/columns into the spark maps as part of the custom OS however, but not this one. Quote Link to comment Share on other sites More sharing options...
lukapuka Posted November 1, 2019 Share Posted November 1, 2019 Thanks to this beauty of an informative thread, I was able to get my cammed xr8 the exhaust crackle back using only theĀ enthusiast package. Two of the tuners I used said it wasn't possible with cams. 1 Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted November 25, 2019 Share Posted November 25, 2019 recently did a track day and people were commenting on another barras decel pop, so i asked the guy and he said his tuner set 10deg on decel. i had a quick play with mine and for the video had the higher rpm set to -2 I could notice it at 10, at -2 it was verry noticable...i ended up leaving it at 6 and it was fine for me....this was straight thro exhaust and e85. Ā after reading the antilag thread i might try and give the 2-3k range bulk fuel and max spark clip to see it it helps spool the turbo, might be a while before i see the track again for testing tho. Ā Ā Ā Ā Ā 3 Quote Link to comment Share on other sites More sharing options...
Stephe Posted August 15, 2023 Share Posted August 15, 2023 On 9/27/2018 at 2:27 PM, Roland@pcmtec said: NA cars will always crackle and pop far more than a turbo due to the turbo muffling the sound but you can still do it on a turbo. The method to do it is via the decel spark and low load fueling. There is another thread about flames which discusses these maps. Eg if you set the decel spark to 0 degrees you will massively deafening backfires on deceleration. I tried it and it was extremely loud and very obnoxious. You need to disable DFCO as well by settingĀ auF1265 "Minimum DFSO time delay seconds" to something like 8+ seconds (after 8seconds of decelĀ it will shut off fuel). Note this parameter is only available in Professional and above. Try this for some muffler destruction. You will probably destroy the baffles in your muffler if you ran this for an extended period of time. hey is this method just for turbo or can it also be applied to fg n/a Quote Link to comment Share on other sites More sharing options...
Puffwagon Posted August 15, 2023 Share Posted August 15, 2023 @Stephe A turbo car and an NA car are doing the same thing when decelerating. Yes it will work with an NA vehicle. 2 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.