Need tuning device for gst

[toofasteclipse]

Ok, after countless hours of research i am still lost. I need to tune my 97' GST but have mixed feelings about the tuning choices out there. At first i was going to tune with wide band and egt with a SAFC. Now after some more research i have discovered that using a datalogger might be the better route to go. I dont want to shell out the money for dsm link so that is out of the question. I need some serious input. What should i tune with? I plan on using a big 16g turbo with 660 injectors, FMIC and SAFC. That part is the only thing I am sure of. What do you guys think?

 

[andymoraitis]

DSM Link would provide you the greatest level of control with the exception of a full standalone, however if it's not in the budget, I can understand. First things first, you'll need an upgraded fuel pump to run the Big 16G to it's potential. Avoid the 255 as it's unnecessary and will require an AFPR (additional expense and tuning step).

Another option for you that's less expensive than the AFC/Logger/Wideband combination is an EPROM ECU with a Keydiver Stage III chip. By setting custom air/fuel ratios and timing ramps within the chip, you can have all of your settings in one package that you won't have to mess with all the time. In addition, you'll have the ability to see knock on your stock boost gauge, which is a key indicator of how close to the edge you are.

The issue that I have with the AFC is that it subtracts airflow to compensate for larger injectors and cranks up the timing. The solution is to add fuel/airflow back in, but this doesn't necessarily result in the best air/fuel ratio for tuning on pump gas which is what you'll be running on a consistent basis. It's like trying to manage something three dimensional with a one dimensional input.

Even with an EPROM ECU, a logger is a good idea, but not absolutely required. Your choice of going with 660's is right on as these will suit the 16G well without running into high IDC's. If you want more information on Keydiver chips, you can read the site info here: http://www.dsmchips.com

Additionally, I have a tech write up on my website that talks about why custom settings in the chip work so well with 1/4 mile times to back it up. You can find the article here: http://homepage.mac.com/andymoraitis/GSXarticle2.html

I swear by this setup and have helped other tuners convert to an EPROM ECU only fuel control system with excellent results. Drop me a PM if you decide to go this route and I'll give you custom settings for the chip burning process. Total cost for the entire setup (ECU and chip) will run you about $380 and chip upgrades are only $20 each if you decide that you want a different tune for race gas.

Andy

 

[dalatinromeo]

I need some serious input. What should i tune with? I plan on using a big 16g turbo with 660 injectors, FMIC and SAFC. What do you guys think?

I would select DSMLink. It has everything you need. You can def have a good tune using SAFC w/ logger, but DSMLINK will be so much easier, and you have tons of options that SAF-C does not have.

Hope this helps, Stay boostin

 

[alex]

DSM Link will provide you with a more confident way of tuning as I see it. My brother has SAFC II, and to tune it seems difficult compared to DSM Link and your not 100% sure if your doing it correctly. With DSM Link, it is really easy to tune, select what you want (intake, etc.) and you can tune it right there. If you think about it, I think DSM Link is cheap. Its only $595 for the DSMLink V2 package w/socket service. For $600, some of you might be reading this thinking that im crazy, but considering what it does, the price is amazing. To me, I probley won't do anything but DSM Link just because I have the confidence to play around with it and im not afraid to try new things out with it.

 

[FORMONTOYA]

If you think about it, I think DSM Link is cheap. Its only $595 for the DSMLink V2 package w/socket service. For $600, some of you might be reading this thinking that im crazy, but considering what it does, the price is amazing.

I use link in my car and agree that it is a wonderful tool. However the misconception that it only cost $600 is a mistake for most. Only some 95 came with an eprom, so with any other 2g car you will need an eprom ecu ($250 min) and a laptop ($100 min) if you don't have one, so in actuallity you are looking at around $950-$1000 to get a working unit. Well worth it in my opinion, but still out of a lot of peoples budget.
I wanted it bad enough that my car sat in the garage an extra couple of months until I save up for it.

Jim

 

[alex]

I use link in my car and agree that it is a wonderful tool. However the misconception that it only cost $600 is a mistake for most. Only some 95 came with an eprom, so with any other 2g car you will need an eprom ecu ($250 min) and a laptop ($100 min) if you don't have one, so in actuallity you are looking at around $950-$1000 to get a working unit. Well worth it in my opinion, but still out of a lot of peoples budget.
I wanted it bad enough that my car sat in the garage an extra couple of months until I save up for it.

Jim

That is true, I never looked at the extra stuff needed (laptop, eprom ecu, etc.) I was just looking at the DSM Link. However, it is still worth it.

 

[toofasteclipse]

ok, i have talked to several of people i know and they said use wide band and a logger. I will purchase these items on the first as well as the 660s and afc. i will let you know.

 

[luvmygst]

Check out ECU+ it is basivcallt the same as dsmlink, but you need no e-prom. Total cos $499 ( I think). The total plug and play ( nu cutting of wires) is i think $599. You still have to have a cheap laptop, but it can also be tuned with a palm pilot(im pretty sure of that but check to besure)
http://www.ecuplus.com/tuning.htm

Check it out and see, at least its another option. I'm ordering one for my car and I already have a e-prom computer. I just like some things better about it. Bottom line__ your car your choice.THe wide band is a great idea but the cost of the AFC and then a logger will be close to the price of this system. Good luck.

 

[dave99gst]

The problem is, for the cost of a logger and afc your more than
half way there for buying an dsmlink. If you can swing it I would start out with a
dsmlink from the jump.

 

[barfoot1]

The problem is, for the cost of a logger and afc your more than
half way there for buying an dsmlink. If you can swing it I would start out with a
dsmlink from the jump.

This is true, and dosnt count in all the additional features that dsm link can do.