Car:

91 si
B18C5
JRSC

Currently non-intercooled

Goal is to tune on 93 pump gas for street driving, then do a separate e85 race tune.

I'm using the gravity imports crome user manual.

This thread is for me to keep a record of my Tune-It-Yourself trials and tribulations with crome pro, and possibly other ems (I have v1 aem ems and hondata s200 currently as well).

 

I've just been street tuning partial throttle and this is kind of bugging me:

This is two sets of data logs for the very same .bin file.



Tune is leaner in the morning - 54 deg ambient air temp.



Tune is richer in the afternoon at 70 deg ambient air temp.


I'm kinda chasing my tail on this because I'm using no fuel compensation on any of the iat or coolant temp settings in crome.

Or should I just play with those when I'm happy with my tune?

I was thinking to tune when the weather is cooler, then just let it run a bit richer when it's warm...

But since most autox events will be 90-100 deg weather, should I tune for hotter weather and then let the temp and iat compensation do the rest?

Also, should I be using the "filter out statistically unacceptable readings" button before making changes?
At first I wasn't, but changes from pull to pull possibly weren't as consistent.

Column 1 changes seem to be really inconsistent - like almost not worth even chasing to fix.
And is there a tip-in lean condition I can track?

I'm wondering if that's why sometimes a data log shows lean on one pull and rich on another at say 60% throttle.

 

what tps min value are you using for logging?

 

Tuner Logging settings:

0-100% throttle

lambda .5 to 1.52 for the innovate wideband.

0-13k rpm

0-3000 mbar

60-150deg Celsius water temp

2,3,4,5 gears

 

use 10-100%. it will filter out tip-in and tip-out

 

Thanks!

What can I do about tip in lean issues?

I've heard the jrsc is notorious for that.

 

You can come back and make small tip in adjustments after you get a decent base.

Enable the corrections, no reason to zero that out.

 

What's a good set of correction factors to use?

I zero'd everything out already - just based on the gravity imports manual suggestions.

 

The preset values are close, you should be in or near the I corrected values while tuning anyhow.

Your knocking on dangers door with that supercharger as the weather starts to get warmer. Do you have a local tuner that can help?

 

Now THIS is Honda TECH - subscribed and thanks for the TIY Black_R

 

Here are my maps from my GSR if they are of any help.

http://forum.ectune.com/viewtopic.php?t=3043

 

I'll try again with the preset values - they looked like a wild swing when I last checked them - to the tune of 30% richer when cold.

There is a local tuner - Scottydb411 - but the whole point of this was to tune it myself.

I'm only running the mvm stepper pulley, and it's pig rich, and only a little over 7psi, so I haven't been too worried.

No hint of ping or knock so far - and I'll be switching to e85 before the next autox event anyway - along with water injection - so that'll hopefully give me an extra margin of safety.

Next on the list after that is air to water cooler core installs, but one step at a time.

 

I liked zeroing out the IAT and ECT tables just for giggles. you'd be surprised at how large of a correction is needed on the IAT load scales onces the map has been tuned without them. at least thats how it was in my case.

either way works. sure, the presets are close but its nice to see how much the iat correction actually matters.

as far as tip-in goes, you can fix that in the map and with tip-in adjustment. With the charger, i bet you would do more good tuning the tip-in in the map given the load/fuel tendencies of a charger. To figure out tip-in, simply only allow the lambda table to log 0-10% (or just a small, low range of TPS). You can target certain throttle percentages just by setting what TPS % you want to see.

 

Natural Aspirations, I couldn't login to ectune forum - says my acct is inactive - sent an email to admin with no reply back yet.

Can't register a new acct either so... :/

I went back to an older tune (#26) with all the coolant and iat temp corrections in place - not sure I like it much - it's not as smooth.

But it seems to be more consistent as far as weather / temp goes.

One strange thing is that the idle seems to be rather high for no reason - I have it set to 750 in crome, but it's at 1200 and surges sometimes.

I'll mess with the settings for temp or cold / warm idle today and report back.

 

Idle compensation doesn't work well in crome. Keep your files updated on PGMFI and folks can assis there as well.

 

have you tried changing your TPS logging min/max values to see if it helps at all?

 

^ Tps logging I changed to 10%-100% to filter out tip in.

 

I'll upload to pgmfi so you can look at them.

Bin 88 had a decent idle at 800 rpm.

My new 26.bin it's a 1200 rpm idle and surges a bit.

I'll keep street driving and logging and making changes.

 

Idle surge can typically be fixed by "properly" adjusting the idle with the IACV unplugged. You should not need to use the adjustment bar to get a stable idle.

 

I went back and redid my partial throttle a bit at a time with the compensation values in the map you sent me way back when Natural Aspirations.

I uploaded the latest .bin and several .dlf files here:

http://forum.pgmfi.org/viewtopic.php?f=35&t=23965

Any input you guys have or suggest would be fantastic.

 

*crickets*

Ok well I went ahead and switched over to e85 now that my partial throttle tune is pretty livable.

I basically took my .bin file and copied and pasted my fuel maps for non VTEC and VTEC into an excel spreadsheet, then multiplied by 1.30, then pasted the new values into my .bin and saved it as e85 jrsc.bin.

I burned a new chip and fired her up after filling up with a full tank of Exxon e85.

That got me pretty close, and now I'm able to street tune from there.

I need to go back and add timing to my boost maps, since I'm pulling so much timing in that portion of the map, but I feel a lot better about tuning with this fuel (safer).