RomRaider

Havent downloaded the file yet but yes is the answer as i tuned mine to work like this too, about -20 retard in the first to low columns on the base timing from 6500 to 4000rpm, feather throttle here would activate massive bangs and flames as i also added slight fueling in this area too.

You are not allowed to post files if they dont made by u!

So in all technicality, we are not allowed to share stock bin files?

Im pretty sure the rule is no sharing tunes from companies like Dinan, Confortti etc etc.

No only allowed to post files done by yourself.
If you got the ready to go from the people how made it its okay... but dont think so many people would do this because most of them dont do it for free.
Not only companies dont want to get there work share... thats the reason I only share tips not values or files ...

So i tried this tonight .......(its the attached PNJ file )

Messed with Decel for a long time but tried to mess with the dashpot tonight, none of it worked atall, i also based it on the AC button triggering the fuel restore,it works a little as you can here faint burbles but isnt right atall, im trying to go for the high RPM pops and bangs
Anyone got any input

Il put it out there...............

Rk tunes has pretty much hands down nailed the pops and bang tune which makes me think that after all this time none of us have really got near what his tune achieves in that department so either we might be making it more complex that it really is or are there some tables that are easily manipulated that haven't been defined here yet?

I have tried so many combinations of tune now with the help of others here over the past 2 years, i get basic results but nothing full on.

Pops & bangs for me are a bit of fun and an after thought now i have a overall tune i`m happy with, is there more info we could perhaps share with each other, i know how close to our chests some people keep information, many minds are better than one

If i can help in anyway i am more than happy to as the whether is a little better now and im up for testing.

Who is "the guy" you are talking about?

I personnally have the stock ecu parameter regarding 'pops and bangs', and this is enough for me. Meaning without changing anything I get slight pops and bangs depending on the condition.
What I can say is I got more of them when I did the changes to delete revhang. But they were just louder.

RK Tunes ( Jordan ) is a well known tuner in the states that has pretty much got the pops, bangs and flames tune spot on for the e36 as well as most other BMW`s, i am yet to see anyone succeed the way he has with this particular type of tune, yes when running ms41 i get decel to pop and bang but it was random, not controllable and now running ms41.2 with the same setting i get nothing, must be a better, more simple way. Video shows what i am/ not getting . only got flames, no burbles https://www.youtube.com/watch?v=dxjhKrd8Dk8

I could be wrong, but I imagine that a lot of the pops Mr RK gets are to do with the secondary air pump... which doesn't exist on your car.

As you are currently filling your exhaust with fuel but no air you're not getting the shotgun blasts you would be if you had the pump.

On my Yamaha I blocked off the air injection precisely because the pops and bangs became tiresome!

Nope. Has nothing to do with the SAP

Wouldn’t it be geared more so to Idle Air Control Valve tables? But if you use the IACV to add air you are going to get some revhang.

Dave 321 : Secondary airpump should only be activated for like the first 30-60 seconds of a cold start...if it runs much longer, I would assume there is a problem. Its supposed to heat the catalyst quicker for emissions control. Not sure about the ms41 definitions but the ms42 definitions have a table for how long SAP runs.

OK, interesting.

It guessing it could work very well if it could be mapped to turn on when you want it to...

OK, interesting.

It guessing it could work very well if it could be mapped to turn on when you want it to...[/quote]Why dont you delete your sap from your ecu, and make another switch to turn on sap manualy when ever you want?

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I have tried running with the ICV open at higher RPM , retarding timing on decel and adding a little fuel, no change, Surely someone here after all this time must have some idea of how RK do it ??

Please, if someone has more knowledge or proof, correct me if I am wrong:

I know im in the ms41 subforum but would like to share what i’ve learned.
On ms42, and most likely many other manufacturers cars that have an IACV which is nearly any electronic fuel injected vehicle, it is open 100% at high rpm ranges and low rpm ranges at lower load. But there is also more than the two normal maps we see for IACV (iacv cold engine and iacv warm engine). The other IACV maps I am unsure how they work/when they work/why they are there at all and where they are located.

I am 99% sure though that RK’s crackle/pops/bangs tune has absolutely nothing to do with the SAP, it is a very common mod that people delete the SAP and its mechanical valve and install a block off plate on the cylinder head where the mechanical valve goes. Doing so removes weight even though its a minimal amount, and it frees up space in the engine compartment.

Valve timing, ignition timing, air, and fuel...those are the four things to be inspected to make what you want happen. Dashpot settings and IACV maps/tables add or subtract the air, injectors on during decel is one thing that obviously needs done, exhaust restrictions such as catalytic converters need to be deleted...thats about as far as my knowledge of this issue goes. On drive-by-wire throttlebodies and hybrid wire&cable throttlebodies there are additional maps and scalars that need adjusted.

Although I would definitely enjoy some nice crackling during decel through the entire rpm range (from high to low rpm) I have also noticed that doing so creates way to much rev hang during shifts and also causes very slow rpm drops. Therefor I choose performance over popcorn noise.