-= Ultimate Emanage Tuning Thread =- - Page 38 - 3000GT/Stealth International Message Center

Racer_X · 11-09-2007, 07:13 AM

Quote:

Originally Posted by BlackStealth

So what advantages are there to sending a fixed IAT signal to the ECU, but a real signal to the EMU?

Theoretically it removes an extra variable that you have to tune for. If the IAT is adjusting your stock injector pulse width and ignition timing with respect to temperature, Then you will most likely have to re-adjust at the very least the fuel per temperature with the emu to bring it into spec (I know my car with 850's would change air/fuel ratio a bit when seasons changed back before I got rid of the stock MAF. That was when I was running stock I/C's and running the MAF on 1 turbo). timing will most likely not be as bad. It still requires tuning, but at least you don't have to "tune around" the stock adjustment.

Fred 62 · 11-09-2007, 08:31 AM

the fact i put the GM IAT at the Y pipe could affect ECU patches.

so, as i can now read intake temperature in the intake manifold by the way of thermocouple-J + 12V gefran temerature screen,
it seems to be a good way to control air temperature with EMU and not ECU.

i can know if the temperature in the intake manifold is about 200°F.
but i don't know how ecu calculate air temp at the manifold when temperature at the air filter is 120°F.

this is an exemple of standalone ecu maps corrections in fonction of water and air temperature :

water temp map

intake temp map

for our engine, what could be a good scale for IAT fuel and timing compensation ?
something like the pic i posted i think. but what do you think about corrections values ?
is timing advance ( or retard ) datas a lot to much in fonction of temperature ?
the same with fuel map

i also see in the AEM software but i found not good inquiries about IAT compensations.

thank's
fred

Fred 62 · 11-09-2007, 08:47 AM

here is a type of table i would like to make with EMU.
perhaps have you information on DSM ECU

the second pic is what i want !
but i'm not sure of mini and maxi of the datas.

think's good for me.

thank's
fred

2root4u · 12-11-2007, 09:40 PM

Quote:

Originally Posted by Racer_X

Theoretically it removes an extra variable that you have to tune for. If the IAT is adjusting your stock injector pulse width and ignition timing with respect to temperature, Then you will most likely have to re-adjust at the very least the fuel per temperature with the emu to bring it into spec (I know my car with 850's would change air/fuel ratio a bit when seasons changed back before I got rid of the stock MAF. That was when I was running stock I/C's and running the MAF on 1 turbo). timing will most likely not be as bad. It still requires tuning, but at least you don't have to "tune around" the stock adjustment.

I may change over to a static reading as well after my recent experience with the weather getting cold. I had a decent tune up to 20psi, but on my latest runs with the cold weather in VA, I hit the 100% IDC problem at only 2100hz! That totally screws up my map. In summer weather, the 100% occurs at 2400hz.

pyun · 12-12-2007, 05:56 AM

Quote:

Originally Posted by 2root4u

I may change over to a static reading as well after my recent experience with the weather getting cold. I had a decent tune up to 20psi, but on my latest runs with the cold weather in VA, I hit the 100% IDC problem at only 2100hz! That totally screws up my map. In summer weather, the 100% occurs at 2400hz.

Are you running a GM IAT or a hacked up stock MAS?

2root4u · 12-12-2007, 09:00 AM

Quote:

Originally Posted by pyun

Are you running a GM IAT or a hacked up stock MAS?

Stock MAS.

VR4neophyte · 12-18-2007, 10:14 PM

Great to see so much progress with the EMU.

Can it effectively log knock on a '95 now? Or is that something that is still lin the future according to Greddy? I've seen the couple of posts on how to set this up, but I'd like to read about someone who is logging knock and really loving how easy it is to read the logs for knock.

Racer_X · 12-19-2007, 07:02 AM

you can log it, but the signal can be a bit noisy. Plus, I don't believe it takes Engine speed into account when displaying knock, so it gets higher as your RPM's increase. YOu can definitely see it 'though. It seems to be on the same scale as most typical dataloggers (i.e. 12 or more is bad). but it is more sensitive than a s-afc. I actually think I am going to just get a palm logger due to the fact that the warnign feature doesn't work for knock on the EMU, but it does on a palm ecu datalogger. I like to hear sounds or see lights when crap goes wrong while driving.

pyun · 12-19-2007, 10:01 AM

what is currently, the most bug-free version of software for the EMU? Grayson/Armond, which versions are you using?

Racer_X · 12-19-2007, 01:32 PM

The last version I used was 2.13, and it was pretty bug free (except for the stupid ignition timing datalog going 120 degrees out of phase at times). I spoke to Greddy about that at last years TAS.........their responce was "we know. It will be fixed on the next update". so far only toyotas have got the fix. I will mention it AGAIN this year. oh yeah, and the knock values don't set off the warning even if you set it up for it. warning just stays on. Other than that, I have 0 complaints. seems to do everything right.

11-09-2007, 08:31 AM	#372 (permalink)
Fred 62 Forum Member Join Date: May 2005 Location: FRANCE Trader Rating: (0)	Re: -= Ultimate Emanage Tuning Thread =- the fact i put the GM IAT at the Y pipe could affect ECU patches. so, as i can now read intake temperature in the intake manifold by the way of thermocouple-J + 12V gefran temerature screen, it seems to be a good way to control air temperature with EMU and not ECU. i can know if the temperature in the intake manifold is about 200°F. but i don't know how ecu calculate air temp at the manifold when temperature at the air filter is 120°F. this is an exemple of standalone ecu maps corrections in fonction of water and air temperature : water temp map intake temp map for our engine, what could be a good scale for IAT fuel and timing compensation ? something like the pic i posted i think. but what do you think about corrections values ? is timing advance ( or retard ) datas a lot to much in fonction of temperature ? the same with fuel map i also see in the AEM software but i found not good inquiries about IAT compensations. thank's fred __________________ Donnes le meilleur de toi même en toutes circonstances DN precat & manifold, downpipe, JIC exhaust, TD04 HL15G, IK27, Magnecor 8.5, EGR & canister & solenoids removed, Samco hoses, FIPK air filter, HKS twin power DLI, RPS max clutch & flywheel, DN intake pipes & Paceproducts intercoolers 680cc injectors, emanage ultimate, GM boost solenoid, PLX-R500, MMCD1.8 + palm, 7 gauges + pillar pods, blitz turbo timer blitz DSBC boost controller, tein type S springs, strut bars 3SX & sways bars, DBA brake discs, Goodridge Stainless-Steel Brake Lines carbon pads, shift boot and knob, kevlar timing belt, oil line kit 3SX, supra pump, boost a pump, fuel fiter and fuel rail adapter & modifications 92.5 wiseco pistons, clevitte bearings, ferrea 1mm oversized valves, head porting, fidanza can gears -3/+1, etc... Last edited by Fred 62 : 11-09-2007 at 08:35 AM.

11-09-2007, 08:47 AM	#373 (permalink)
Fred 62 Forum Member Join Date: May 2005 Location: FRANCE Trader Rating: (0)	Re: -= Ultimate Emanage Tuning Thread =- here is a type of table i would like to make with EMU. perhaps have you information on DSM ECU the second pic is what i want ! but i'm not sure of mini and maxi of the datas. think's good for me. thank's fred Last edited by Fred 62 : 11-09-2007 at 08:53 AM.

12-18-2007, 10:14 PM	#377 (permalink)
VR4neophyte Back in the Saddle Join Date: Jul 2002 Location: Singapore Drives: 95 VR4 + 03 Vette Trader Rating: (23)	Re: -= Ultimate Emanage Tuning Thread =- Great to see so much progress with the EMU. Can it effectively log knock on a '95 now? Or is that something that is still lin the future according to Greddy? I've seen the couple of posts on how to set this up, but I'd like to read about someone who is logging knock and really loving how easy it is to read the logs for knock.

12-19-2007, 07:02 AM	#378 (permalink)
Racer_X just some guy. Join Date: Feb 2000 Location: Stockbridge, Georgia Drives: 94 Stealth Turbo Trader Rating: (9)	Re: -= Ultimate Emanage Tuning Thread =- you can log it, but the signal can be a bit noisy. Plus, I don't believe it takes Engine speed into account when displaying knock, so it gets higher as your RPM's increase. YOu can definitely see it 'though. It seems to be on the same scale as most typical dataloggers (i.e. 12 or more is bad). but it is more sensitive than a s-afc. I actually think I am going to just get a palm logger due to the fact that the warnign feature doesn't work for knock on the EMU, but it does on a palm ecu datalogger. I like to hear sounds or see lights when crap goes wrong while driving.

12-19-2007, 10:01 AM	#379 (permalink)
pyun "The Fisherman" Join Date: Dec 2002 Location: Bergen County/Philly Drives: around scaring birds Trader Rating: (75)	Re: -= Ultimate Emanage Tuning Thread =- what is currently, the most bug-free version of software for the EMU? Grayson/Armond, which versions are you using?

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12-19-2007, 01:32 PM	#380 (permalink)
Racer_X just some guy. Join Date: Feb 2000 Location: Stockbridge, Georgia Drives: 94 Stealth Turbo Trader Rating: (9)	Re: -= Ultimate Emanage Tuning Thread =- The last version I used was 2.13, and it was pretty bug free (except for the stupid ignition timing datalog going 120 degrees out of phase at times). I spoke to Greddy about that at last years TAS.........their responce was "we know. It will be fixed on the next update". so far only toyotas have got the fix. I will mention it AGAIN this year. oh yeah, and the knock values don't set off the warning even if you set it up for it. warning just stays on. Other than that, I have 0 complaints. seems to do everything right.