MPTuner

[tryingbe]

***Compressor map file available***
version 2.0.3.9 and above allows the user to download a file that contains many compressor maps. download the zip file from the following link:
http://www.terveenfamily.com/MPTune_...s/mpgraphs.zip

-after you have downloaded the zip file you need to expand it into the directory that mptune.exe is in, usually something like C:\Program Files (x86)\MP Suite\MPTune. then when you go into the menu setting called "settings -> calculators -> turbo sizing" it should bring up a list of compressor maps. this file is huge so if you prefer you can just load in your own compressor maps using mptune2. This is done by using the menu setting called "miscellaneous -> images -> turbo list".

Is this working for anyone? I tried it, but it does not bring up any compressor map

- - - Updated - - -

Also, is there a way to make transmission hybrids to be included in the gearing calculator?

I've got an A555 with a FD of 3.5.

[wheming]

Is this normal to see a 2psi or so difference between a calibrated gauge and what the smec sees for map?
I was looking at this and the map sensor reads lower than actual.

If hard to see, mityvac gauge at 20psi, mpscan shows 18psi.
Checked Both map sensors i have and read similar.

[ShelGame]

What MAP sensor? Where did you get it? If it's a cheap Chinese MAP from eBay, it's totally believable.

[wheming]

It was an AC Delco 3bar. From Amazon i think, but not sure if i bought both there.
I've ordered a 4 bar from Omnipower to try.
So normally you do see them match? I tried both 3bar sensors i have and the read about the same amount off.

[wheming]

Question about MPTune AFR tool setup.


If the AFR tool takes the injector size from the cal setup, how does the tool use the rated and actual fuel pressures?
I think this is where i had an incorrect configuration. I used 95#/hr injector scaling, but on the AFR tool i put my actual fuel press as 38, (which i run and makes the injectors flow like 89#/hr)
The tool and suggested peftbl always has looked weird.

[ShelGame]

The AFR calculator doesn't suggest anything for the PEFTBL. Only the 3 main fuel tables.

Personally, I don't use the FP this way. I re-calculate the flow rate using the RC Engineering tool (rceng.com), and then input this as the overall injector flow rate and scale the entire cal accordingly. If you use the FP in the AFR calculator, it will only affect the 3 main fuel tables (I think, Morris will need to confirm).

[wheming]

My "fix" was to do just that, use RCeng to calculate new flow based on my fuel pressure, then use that for my injector scaling (which gives me the yellow guideline in the 3 main tables, fuelbaselinefrommap, FuelFullThrottle, fuelpartthrottle; then in the AFR tool i set the fuel pressure the same as the injector rated pressure.

The other change i tested last night was to match my fuelcoldenrichment cuves A, B, C to the T-SMEC cust G head cal. My cal was based on 139 (even though i do have a Menegon G-head), and those cold enrich factor curves were considerably higher and my cold starts were rich enough to burn your eyes when walking behind the van. It seemed to help out alot, but now i get more timing retards during warmup.
Fix one thing, create something else to fix i guess... tuners job security? ? ?

[wheming]

The AFR calculator doesn't suggest anything for the PEFTBL. Only the 3 main fuel tables.

The AFR tool doesn't use some part of its calculation when suggesting changes to the PEFTBL when you import your actual AFR/MAP/RPM data?
I ended up having peftbl that gets all maxed out and looked like this:


I think with the injector scaling, plus possibly adding a bit to those 3 main fuel tables, it may bring the peftbl curve to a more normal appearance.

[ShelGame]

Oh, the peftbl tool. Yes, it uses the afr data to adjust the peftbl.

Make sure your data is all wot. And, do a reality check - are you lean in boost? If not, something isn't setup right.

[wowzer]

Question about MPTune AFR tool setup.


If the AFR tool takes the injector size from the cal setup, how does the tool use the rated and actual fuel pressures?
I think this is where i had an incorrect configuration. I used 95#/hr injector scaling, but on the AFR tool i put my actual fuel press as 38, (which i run and makes the injectors flow like 89#/hr)
The tool and suggested peftbl always has looked weird.

The AFR table gets the injector size from the cal. the rest of the calculations for the yellow AFR line used for the 3 fuel tables come from the AFR screen. you need to make sure they agree with reality. so enter the actual injector settings in the table and then if you run at 38 psi vs 55 for fuel pressure then change that setting and save it. The PEFTBL is based on the info you enter from your wideband and uses the injector size of the cal, along with the pressure and afr readings from your wideband to calculate VE error.

[ShelGame]

The AFR table gets the injector size from the cal. the rest of the calculations for the yellow AFR line used for the 3 fuel tables come from the AFR screen. you need to make sure they agree with reality. so enter the actual injector settings in the table and then if you run at 38 psi vs 55 for fuel pressure then change that setting and save it. The PEFTBL is based on the info you enter from your wideband and uses the injector size of the cal, along with the pressure and afr readings from your wideband to calculate VE error.

This brings up a good point - I was thinking recently that it might be better if the injector flow rate stored in the cal was based on the re-calculated value form the AFR setup, rather than the injector setup. It's kind of cumbersome to re-calculate the flow rate with the tool, then input a new injector flow rate (because it's probably not a common flow rate) and then close and re-open the cal; select the new correct flow rate; and continue to setup the cal.

[wheming]

This brings up a good point - I was thinking recently that it might be better if the injector flow rate stored in the cal was based on the re-calculated value form the AFR setup, rather than the injector setup. It's kind of cumbersome to re-calculate the flow rate with the tool, then input a new injector flow rate (because it's probably not a common flow rate) and then close and re-open the cal; select the new correct flow rate; and continue to setup the cal.

To me there are two things to consider, trying to make it easier for the tuner that has a background, or for the new guy.
I think what would be easier for the new guy would be to use the tool to decide what size injectors you have (based on your actual fuel pressure vs rated fuel pressure) and you input your actual injector size.

Or, the new guy needs to understand they have to recalculate their injector flow based on which fuel pressure they run, add it to the injector scaling (if not already there) and then set the rated fuel press the same as the actual fuel press in the AFR tool.

Am i on target here or am i still confused? I think i got it now... i think!

[jpcturbo]

Using MPTune 2.0.5.0. When looking at the FullThrottleTotalTiming Calculated Table, it seems is treating the LimitForHotMAPAdvance (RPMLMT) table as a minimum value for MAP calculated timing instead of an upper limit. e.g. if the table is set to 32 degrees for all points, the timing graph is a bit flat and at no point is the total timing below 32 degrees.

[ShelGame]

Correct, RPMLMT is a minimum advance...

[wowzer]

Using MPTune 2.0.5.0. When looking at the FullThrottleTotalTiming Calculated Table, it seems is treating the LimitForHotMAPAdvance (RPMLMT) table as a minimum value for MAP calculated timing instead of an upper limit. e.g. if the table is set to 32 degrees for all points, the timing graph is a bit flat and at no point is the total timing below 32 degrees.

i would recommend you allow mptune to autoupdate to the newest version (2.0.5.5).

[22shelby]

Now when you say minimum advance.. that meaning the least amount of advance the map can pull/add.. so if it set to 0° the map can pull timing out all the way to 0°.. and if set to say 10° it will only pull timing to 10°??

I may have just asked the same thing that Jeff C just asked lol

[EaZyE426]

While trying to open any of the T3 Turbonator cals, I get this error. LM, SBEC, and SMEC cals open without error, just the T3 cals.
Just getting started on tuning, so forgive me if this is something I screwed up, but I could not find a post with anyone having the same issue.

Thanks,

Warning->Injector scaling was changed to word.  Please review line:
;mpinjscale scale
for table DensityFactorPartThrottle


Warning->Injector scaling was changed to word.  Please review line:
;mpinjscale scale
for table DensityFactorFullThrottle


Warning->Injector scaling was changed to byte.  Please review line:
;mpinjscale invert
for table FuelMonitorCorrection2

[wowzer]

they are errors but mptune will correct it the first time you save the cal. so open the template, save it, close it, then reopen and the errors should go away. the tables are defined as word tables so mptune adjusts the scaling to word. rob LLoyd will have to confirm if the tables noted are suppose to be word tables or byte tables. i think word is correct.

[EaZyE426]

I think you hit the nail on the head. Saving and re-opening loaded with no errors.

Now, to figure out these 3D tables....

[wheming]

So I've noticed that when racing, particularly during the burnout, my engine sometimes exceeds my rev limiter.
Maybe i have my setting too close?
So a couple of questions:
Under setup i have selected Spark-Based Rev limiter.
So, this is the normal rev limiter as well as the Launch Control Staging limiter?
I'm using a 4/5 Cut on the Spark Cut Fraction table.
It seems to work for staging, but i've gone over my 6200 rev limiter before when doing the burnout.
Should i try a different fraction?
Or should I try to increase the differential between the rev limit on and off values? (Currently about 150rpm)