dsmlink with gm maf

[91-gsx]

hey guys, well i am thinking of taking the leap and buying dsmlink. but before that, i noticed that there is no option for the gm maf with dsmlink. so how do you guys tune dsmlink and the maft? another thing, so far i have not had the best of luck with the chip i have for my ecu because i cannot really tune as much as i wanted to. i am also low on money now(arent most of us...) so do you think i will have to buy something right after dsmlink, because i dont want to have to buy something else right after?
thanks for the help

 

[Slow95gsx]

Set the maft to to stock injectors, and everything else on the maft to zero. Then do all the tuning with dsmlink. It can be a PITA to tune using dsmlink and gm maf if you dont do it that way. Then go here,
http://dsmlinkwiki.redacresracing.com/default.aspx/DSMLink/MAFTCalibrationByWBO2.html
and
http://dsmlinkwiki.redacresracing.com/default.aspx/DSMLink/MAFTCalibrationByLoggedBoost.html

 

[97gstnick]

hey guys, well i am thinking of taking the leap and buying dsmlink. but before that, i noticed that there is no option for the gm maf with dsmlink. so how do you guys tune dsmlink and the maft? another thing, so far i have not had the best of luck with the chip i have for my ecu because i cannot really tune as much as i wanted to. i am also low on money now(arent most of us...) so do you think i will have to buy something right after dsmlink, because i dont want to have to buy something else right after?
thanks for the help

your most likely going to have to buy a gm map sensor so you can calibrate the maft in good. i have dsmlink, it is simply awesome. dont turn back, you wont regret it. buy dsmlink and the gm 3.3 bar map sensor. the sensor is about $60.

 

[91-gsx]

your most likely going to have to buy a gm map sensor so you can calibrate the maft in good. i have dsmlink, it is simply awesome. dont turn back, you wont regret it. buy dsmlink and the gm 3.3 bar map sensor. the sensor is about $60.

the above links did not say anything about a map sensor... do i have to go that route or will the above work fine? and by the way, were do you have the map sensor installed?
thanks for the help, the links above are great as well.

 

[97gstnick]

yes, there is a very good chance your going to need the gm map sensor. its used to calibrate your maft. you see, there is a thing called boostest in dsmlink. it means "boost estimate". you want your map to be signifigantly close to the map sensor. you will have to read up about it to fully understand. this is something that a lot of maft guys have to do. you can also use your wideband to calibrate but the map sensor way is said to be superior.

 

[91-gsx]

yes, there is a very good chance your going to need the gm map sensor. its used to calibrate your maft. you see, there is a thing called boostest in dsmlink. it means "boost estimate". you want your map to be signifigantly close to the map sensor. you will have to read up about it to fully understand. this is something that a lot of maft guys have to do. you can also use your wideband to calibrate but the map sensor way is said to be superior.

were did you install the map sensor? do most of the people here have a map sensor with dsmlink? i dont hear much about it but thanks for bringing it up 97gstnick, damn theres another $60 i might have to spend...
later

 

[daren_p]

I thought the map sensor was just used to replace the boost estimate feature in Dsmlink, so you could log your true boost? I'm not fermiliar with the MAFT and tunning it (but I thought most just tunned it out anyways & made all there compensations/tunning with the link) I was under the impression it was just a feature that is nice to have so you are logging your 100% true boost.

 

[Tom N]

The gm or aem map sensor serves alot of purposes.
It allows you to log actual boost.
Which can be used for tunning as well as comparing agains boost est to help calibrate a gm maft if using one.
It also allows you to "use map" when enabling "fake maf"
If you use a maf-t with dsm (which works very well) that you calibrate it.
If you need more help with that when the time comes pm me or just go to the dsmlink board.

 

[Slow95gsx]

You use the 3.3 map sensor to tune the airflow tables so the logged boost(3.3 map sensor) matches the boost est. You can also you a Greddy electronic gauge, avc-r, etc to log boost.

 

[91-gsx]

so this map sensor is a must, huh? but nobogy has told me were you mount it? any pics or just describe, because i have not seen one on a dsm before.
thanks for the help

 

[DSM90AWD]

so this map sensor is a must, huh? but nobogy has told me were you mount it? any pics or just describe, because i have not seen one on a dsm before.
thanks for the help

The GM MAP is a small 2"x4"x.5" box with a vacuume nipple. Can mount it just about anywhere.

It needs a 5V input which you can get from the TPS sensor, common ground and a boost source post throttle body (e.g. intake manifold).

FYI.. two articles posted above said that for the 1G the WB/AFR method was best

 

[Tom N]

The aem map is also small.
Here is how mine is mounted.
Its on the firewall in the yellow box.

You must be logged in to view this image or video.

 

[91-gsx]

that actually looks very easy to install. i was also thinking of going with a progressive water injection setup from devilsownonline.com they require that you use a 2 bar map for 14.7psi or less and a 3bar map for anything above that. i wonder if i can use the map sensor that is needed for the water injection kit. thanks for the pics.
later

 

[97gstnick]

the map sensor can be mounted anywhere. one easy way to wire it in is to cut the wires off of the mdp sensor and wire them to the new map. it works great and possibly the best place to put it. the map sensor is a very nice thing to have even if you dont have a maft. but im telling you, this thing is a must if you have a maft. i spent an hour and a half calibrating my maft. my car has never ran better! what you do is adjust your airflow sliders so that your boostest (boost estimate) is really close to your map sensor reading. what this does is match the correct airflow to the ecu. it gives you more room to tune because if you calibrate it just right, your going to be on the rich side at WOT because the stock ecu keeps WOT rich. any more questions just send me a pm.

 

[tstkl]

im just going to go to speed density as soon as I can. I put the gm maf in blow through, and NOTHING ran like it was supposed to. with a stock fuel system and everything set to stock injectors/0,0,0 the car ran HORRIBLE. I had to add 25% at idle and -25% at wot.

eliminating the gm maf from my set up will be the happiest day of my life. If I could go back I would have just got an evo8 maf, and saved up for dsmlink sooner in my scedual. I might switch to the evo8 maf once I get dsmlink just to make things easier anyways, until I can set up speed density.

 

[97gstnick]

calibratign is not hard at all. once you do it, you will be happy. i bet my maf outflow an evo8 or 2g maf hacked or not, any day.

 

[91-gsx]

The GM MAP is a small 2"x4"x.5" box with a vacuume nipple. Can mount it just about anywhere.

It needs a 5V input which you can get from the TPS sensor, common ground and a boost source post throttle body (e.g. intake manifold).

FYI.. two articles posted above said that for the 1G the WB/AFR method was best

so really i would have to buy a wideband for the above method for the 1g, or the map sensor? which is better to do in your guys opinions?
thanks for the help

 

[DSM90AWD]

the map sensor can be mounted anywhere. one easy way to wire it in is to cut the wires off of the mdp sensor and wire them to the new map

Just for clairification, only the 2Gs have the MDP (manifold differential pressure sensor), so for 1Gs you have to plumb the output thru the EGR-Temp sensor plug (unused in 1G Federal cars).

Since on the subject of DSMLinks, if you clamp both the MAS pressure and temp input when using the MAFT, is there currenty the option to run other sensors on those lines? I read thru the v2.5 users guide and found only reference that clamping "freed up these lines", but not what for or how to.

I'd ultimately like to run a WBO2, MAP and IAT. So if DSMLink could datalog all three, my check would be in the mail yesterday

 

[97gstnick]

Just for clairification, only the 2Gs have the MDP (manifold differential pressure sensor), so for 1Gs you have to plumb the output thru the EGR-Temp sensor plug (unused in 1G Federal cars).

Since on the subject of DSMLinks, if you clamp both the MAS pressure and temp input when using the MAFT, is there currenty the option to run other sensors on those lines? I read thru the v2.5 users guide and found only reference that clamping "freed up these lines", but not what for or how to.

I'd ultimately like to run a WBO2, MAP and IAT. So if DSMLink could datalog all three, my check would be in the mail yesterday

yes, from my understanding you can use the baro and IAT signals for other sensors. i know that on a 2g ecu you must have the resistor (r39?) removed. the rear o2 can be replaced with a different sensor also. you would easily be able to log all those that you mentioned.

 

[turbo98eclipse]

the ecu+ for dsms have the maft "built into" its system. though you dont have as many features as the dsmlink, both have their advantages

 

[turbo98eclipse]

http://dsmtuners.com/forums/showthread.php?t=212314&highlight=ecu

 

[91-gsx]

so i just wanted to ask again because nobody has answered me on this one... so i havw to have a map sensor or a wideband to tune the maft, right? is there anyway i can buy dsmlink and not have to buy either of these 2 for now? another thing is, i like to think of things in this manner because if i ever need the money someday i can get it quickly. if i were to sell dsmlink, would they make a new chip for the person i sold it too, if anybody has experience with selling one or knows anything about it please help? i only ask this because life always has a way of throwing things our way, and i just dont want to buy a product for $600 and not be able to sell it for anything later. i always say, if i can get half of the money back for the mod, then i only paid half for the mod..., i think that is my way of convincing myself...
thanks for the help guys

 

[brute]

For the next update, the folks at DSMLink have been working on getting lots of bugs fixed and getting new features. One of these features is the ability to translate GM MAF so you wouldn't need a translator. They do not know when this new update will be released, though.

 

[97gstnick]

so i just wanted to ask again because nobody has answered me on this one... so i havw to have a map sensor or a wideband to tune the maft, right? is there anyway i can buy dsmlink and not have to buy either of these 2 for now? another thing is, i like to think of things in this manner because if i ever need the money someday i can get it quickly. if i were to sell dsmlink, would they make a new chip for the person i sold it too, if anybody has experience with selling one or knows anything about it please help? i only ask this because life always has a way of throwing things our way, and i just dont want to buy a product for $600 and not be able to sell it for anything later. i always say, if i can get half of the money back for the mod, then i only paid half for the mod..., i think that is my way of convincing myself...
thanks for the help guys

you dont absolutely need a map sensor or wideband. but it is a must have if you want your car to run properly. you can still tune it, but you will be tuning in the dark without those two vital sensors. i dont think dsmlink people will make a new chip if you sell it. but ## a 1g, you can make settings to your ecu and it saves to the eprom.

 

[91-gsx]

you dont absolutely need a map sensor or wideband. but it is a must have if you want your car to run properly. you can still tune it, but you will be tuning in the dark without those two vital sensors. i dont think dsmlink people will make a new chip if you sell it. but ## a 1g, you can make settings to your ecu and it saves to the eprom.

but can i get away with dsmlink and the map sensor then, because right now these were expensive enough as is, but add a wideband thats another $200-$350 that i dont have...
thanks for the help