What is not working now? I saw boost being scaled correctly (target is 24.x) in your log.
Tuning w/ N20 TMAP to see 22+ Boost
- Thread starter Jeffman
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- n20 tmap mboost
What is not working now? I saw boost being scaled correctly (target is 24.x) in your log.
You are under boost target, hence the reason why you aren't reaching load target. Take a look at this segment of your log:
http://datazap.me/u/jeffman/74f?log=1&data=3-4-9-10-15-30&solo=3-4&zoom=67-102
After 5k rpm I'm not sure if you'll be able to hold much more than 21.x psi due to WGDC being almost maxed (91% at one spot), but if you raise WGDC under that I'm sure you can reach 23-24psi midrange say 2750 - 5k starting a pull at under 2k.
Hey guys, I'm working on doing the same thing here, I've gotten with Jeffman for the 3 cell MAP table but I feel like I missed something. I've rescaled load as per his bin, and testing at 155 load across the board. I'm hitting some limiter as you can see in this log. Any pointers would be greatly appreciated!
http://www.datazap.me/u/sw4y1313/log-1501010494?log=0&data=3-23
http://www.datazap.me/u/sw4y1313/log-1501010494?log=0&data=3-23
Duane,
You're hitting your boost targets just fine!
See, I added boost target to your chart:
http://www.datazap.me/u/sw4y1313/log-1501010494?log=0&data=3-4-6-23&solo=4&mark=50
Now to raise your boost and power/torque you need to raise your load tables to 175ish in the max area like 3500-5500. Take a look at my Load tables. You're MT so make sure to adjust MT Load x RPM.
You're hitting your boost targets just fine!
See, I added boost target to your chart:
http://www.datazap.me/u/sw4y1313/log-1501010494?log=0&data=3-4-6-23&solo=4&mark=50
Now to raise your boost and power/torque you need to raise your load tables to 175ish in the max area like 3500-5500. Take a look at my Load tables. You're MT so make sure to adjust MT Load x RPM.
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I'm on GCs so I don't taper boost in the upper rpms, and I'm AWD so my load target is flat across. I started with 155 because I was unsure of what boost that would equate to. Apparently it's 17psi currently but you can see the car drops boost target once I hit it. Ive had this happen before but I cannot remember what table it was. My Boost Limit Multiplier is 2.5 across the board, and boost ceiling at 2.0.
Here's a log at 165 load. It initially targets 22.9psi but drops it rapidly again. I know I need to increase wgdc base to meet target. I dont see how that would cause the drop in boost target when at lower loads (140 and 155) it would hit target but still decrease it in the same manner.
http://www.datazap.me/u/sw4y1313/n20-165-load?log=0&data=3-6-23
http://www.datazap.me/u/sw4y1313/n20-165-load?log=0&data=3-6-23
Duane,
I think it's important to keep in mind that our DME's logic is based on hitting a load target. It does this by adjusting boost and fueling. So lower loads will result in lower boost values. If you look at your data just based on load and load requested you'll see that you're just hitting load requested at the ~4800 rpm level.
http://www.datazap.me/u/sw4y1313/n20-165-load?log=0&data=17-18-23&solo=18
Try raising your loads to 185 like I said earlier, and do three or more WOT runs in 3rd from 2500 to at least 6000 rpm.
I think it's important to keep in mind that our DME's logic is based on hitting a load target. It does this by adjusting boost and fueling. So lower loads will result in lower boost values. If you look at your data just based on load and load requested you'll see that you're just hitting load requested at the ~4800 rpm level.
http://www.datazap.me/u/sw4y1313/n20-165-load?log=0&data=17-18-23&solo=18
Try raising your loads to 185 like I said earlier, and do three or more WOT runs in 3rd from 2500 to at least 6000 rpm.
185 load will be roughly a 24psi for the DME's calculated boost target iirc (depends on load like jeff said). I personally dont like starting datalogs from 2000 rpms. I usually start them a bit higher-2500 to 2600ish. What is your spool mode max rpm set at?
My max spool rpm is currently set at 2750 rpm with my Vanos Spool Inlet / Exhaust table values overlapping (equaling) the moving warm VANOS Inlet / Exhaust table values at 2750 rpm. I currently have lean spool enabled for my stock turbo / OEM catted DP exhaust setup. Right now I have no cowl or engine cover on to help hear spool up and diagnose operation of my Forge Diverter Valves. [SIDEBAR: I had a lot of fluttering on the yellow springs when shifting 3rd-4th WOT. I added a shim to each one to tense the Yellow springs a bit more with no real improvement. I then went up to the blue springs (23-30 psi) and they seem to hold pressure better and release the pressure more crisply.]
During lean spool up I hear lots of swooshing / filling the intake at a Lambda target of about 16.0...
So I'm wondering:
1. Maybe I'm better off reducing my max spool RPM and eliminating lean spool? The theory being that I'd need less air spooling richer and thus achieving faster spool up to hit the max part of the torque curve sooner (at a lower RPM) if I disable lean spool.
2. But on the other hand, lean spool is intended to generate hotter exhaust gas which is intended to speed up the spool process.
3. I think it was Brad or RSL on the other forum who recommended the VANOS / spool strategy I mentioned above to generate nice amounts of torque below spool max rpm. Is this strategy still considered to be sound?
Any thoughts on whether or not to use lean spool for stock turbos / stock exhaust setups running 93 octane and 23 psi?
During lean spool up I hear lots of swooshing / filling the intake at a Lambda target of about 16.0...
So I'm wondering:
1. Maybe I'm better off reducing my max spool RPM and eliminating lean spool? The theory being that I'd need less air spooling richer and thus achieving faster spool up to hit the max part of the torque curve sooner (at a lower RPM) if I disable lean spool.
2. But on the other hand, lean spool is intended to generate hotter exhaust gas which is intended to speed up the spool process.
3. I think it was Brad or RSL on the other forum who recommended the VANOS / spool strategy I mentioned above to generate nice amounts of torque below spool max rpm. Is this strategy still considered to be sound?
Any thoughts on whether or not to use lean spool for stock turbos / stock exhaust setups running 93 octane and 23 psi?
Starting new thread titled, "Thoughts on VANOS and Spool Strategy"
Bringing this back from the sorta-dead. I've been working on a scaled tune for my MMP turbo setup for a couple days now with the n20 map sensor and the MHD 3 point custom conversion. I use the check box in the flash time options also, kinda thought it was required to get the logging boost pressure correct. Anyways my questions is; what should I do with the stock map sensor scaling cal? Right now I've just left it stock, not really sure what's "correct" though. Here's how I have the two tables set now:
I'm pretty sure this is what happens when we check the N20 sensor box in MHD flash options (scales the Tmap)
I use this Map Conv. in my bin (DME logic to scale boost)
More found here:
http://www.bummerboost.com/showthre...ying-to-understand-exactly-what-maxboost-does
I use this Map Conv. in my bin (DME logic to scale boost)
More found here:
http://www.bummerboost.com/showthre...ying-to-understand-exactly-what-maxboost-does
