Ogay, good points about the eprom, I'll have to look into it.
I'm still not convinced about the blow thru, as many have said on other forums that it can be tricky to tune that way, although maybe those are people that couldn't tune either way.
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| 4g61t to 4g63t tuning questions http://www.4g61t.org/forum/viewtopic.php?f=6&t=20846 |
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| Author: | quikgt [ Tue Mar 27, 2007 3:41 pm ] |
| Post subject: | 4g61t to 4g63t tuning questions |
Doin the swap and I'm not sure how my ECU is going to work with the 2 litre. How will the timing maps be different and can I compensate somehow? Tuning with maf-t and also have eprom . A friend wants me to go DSM Link, but I'd rather not get too involved(laptop,etc). |
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| Author: | CaptainTonus [ Tue Mar 27, 2007 4:33 pm ] |
| Post subject: | Re: 4g61t to 4g63t tuning questions |
Quote: Doin the swap and I'm not sure how my ECU is going to work with the 2 litre. How will the timing maps be different and can I compensate somehow? Tuning with maf-t and also have eprom . A friend wants me to go DSM Link, but I'd rather not get too involved(laptop,etc).
The timing maps should be similar, I wouldn't even be concerned with it. As long as you have a MAF-T and you can compensate for whatever injectors you're using that's all that matters. I'd recommend getting an S'AFC to fine tune the car.
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| Author: | quikgt [ Sat Mar 31, 2007 10:11 am ] |
| Post subject: | |
Well, the maf-t compensates nicely for my 650's, as its a draw thru system and seems to tune nicely as my combo with the '61t gave me 280 whp on a Mustang dyno. those that are using a flashed ecu, is that working well and recommended?? I've not had my eprom upgraded, and wondering if it's worthwile. |
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| Author: | CaptainTonus [ Sat Mar 31, 2007 10:21 am ] |
| Post subject: | |
Quote: Well, the maf-t compensates nicely for my 650's, as its a draw thru system and seems to tune nicely as my combo with the '61t gave me 280 whp on a Mustang dyno. those that are using a flashed ecu, is that working well and recommended?? I've not had my eprom upgraded, and wondering if it's worthwile.
I'm not sure what you mean by upgraded EPROM. If the EPROM is "flashed", then it's upgraded, ya know? That's pretty good power, so you're definitely doing something right. I'd convert to blow-thru ASAP though, because it's much better.
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| Author: | quikgt [ Sat Mar 31, 2007 3:33 pm ] |
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No , I've not had the eprom flashed, just not sure what I would want changed. I know that blow thru would allow me to vent, but I'm too old for rice, why do you like it? |
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| Author: | CaptainTonus [ Sat Mar 31, 2007 3:44 pm ] |
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Quote: No , I've not had the eprom flashed, just not sure what I would want changed. I know that blow thru would allow me to vent, but I'm too old for rice, why do you like it?
There are a ton of other advantages to running blow-thru aside from being able to vent the BOV. Since the MAF is located up near the throttle body, you can blow off an IC pipe and the car will still run (unless you blow off the one between the MAF and the TB). It also improves airflow in your intake pipe since you don't have a MAF in front of the turbo anymore, and IMO improves throttle response dramatically. There's honestly no reason not to do it.If you're gonna have the EPROM flashed the most obvious things you'd wanna do are increased rev limiter, fuel cut elimination, injector compensation, phantom knock elimination etc, etc. You can discuss it with Jeff O. to custom tailor a chip to your needs. The things he can do to your EPROM are virtually limitless. |
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| Author: | quikgt [ Sat Mar 31, 2007 4:15 pm ] |
| Post subject: | |
Ogay, good points about the eprom, I'll have to look into it. I'm still not convinced about the blow thru, as many have said on other forums that it can be tricky to tune that way, although maybe those are people that couldn't tune either way.
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| Author: | CaptainTonus [ Sat Mar 31, 2007 4:50 pm ] |
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Quote: Ogay, good points about the eprom, I'll have to look into it.
No, it isn't tricky to tune that way. Whoever told you that must not have any clue what they're doing. Just try it, I'm willing to bet you'll love it and you'll never look back.
I'm still not convinced about the blow thru, as many have said on other forums that it can be tricky to tune that way, although maybe those are people that couldn't tune either way. |
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| Author: | Flying Eagle [ Sun Apr 01, 2007 10:58 am ] |
| Post subject: | |
Wade there is a list of things that Jeff O did for my Eprom chip: Quote: So, the GF goes to the mailbox last night and low and behold, she finds my ECU and Chip delivered at last! Jeff Oberholtzer swirled up a whole lot of stuff for me on this one. Here is what the card reads:
(90 Eprom by the way) (c) 2003-2006 KEYDIVER 03/23/06 7800 RPM REV LIMITER STOCK 1G 5-SPEED 37 PSI AFPR RESCALED MAS 450cc INJECTORS/STOCK DEADTIME 2G MAS NO AIRFLOW CAP RESCALED FUEL TRIMS 10.5:1 WOT A/F RATIO OCTANE RESET ENHANCED CLOSED-LOOP MAPS SHIFT CE LIGHT @ 7000 RPM 800 RPM IDLE 2X Hz FOR LOGGING KARMAN TO 3212 Hz FED/AWD PK CODE (PHANTOM KNOCK RESET CODE) PHEWW THAT WAS ALOT |
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| Author: | quikgt [ Sun Apr 01, 2007 5:33 pm ] |
| Post subject: | |
Thanks Tim, almost forgot you had that done. I'm gonna stick in the '63t and run it for a bit to get a feel for it, then seriously consider some changes like eprom. How is your build up coming? |
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