Topic: Speed density tuning no MAff needed

[2.0 tspeed]

Thought I'd like to share with you guys, that a certain tuning company has found the speed density tables on lnf and other gm ecus :-) no more MAff problems anymore

[GXPinKC]

Who?

[2.0 tspeed]

Oh mr vince,

[snaponbob]

And that means  .... ?????????????

[2.0 tspeed]

As everybody knows, one of the biggest challenges in modding LNFs, is tuning them for various intakes and especially blow off valves (BOVs). These mods can result in sporadic setting of P0101 codes (or other fuel related codes) and disabling of boost (or limits to 3psi) largely due to the sensitivity of the airflow sensors on these vehicles.

We've come up with some completely new tweaks that work with the vehicle sensors to allow for more wider variety of operating conditions when they report the data to the ECM. These new tweaks solve several problems that have plagued the community for a long time, including different intakes throwing codes and requiring re-tunes based on how the air filter is rotated (think the K&N SRI), not being able to run an atmospheric blow-off valve without relocating the MAF, and even then having trouble with the car not running right and hitting limp mode all the time.


Pretty much works off of air mass calculations through the map sensor(s) and volumetric efficiency

My sonata dosnt have a MAff it uses this method of tuning speed density

[shabby]

As everybody knows, one of the biggest challenges in modding LNFs, is tuning them for various intakes and especially blow off valves (BOVs). These mods can result in sporadic setting of P0101 codes (or other fuel related codes) and disabling of boost (or limits to 3psi) largely due to the sensitivity of the airflow sensors on these vehicles.

This really isn't that big of a deal, minor annoyance at best, although speed density is nice to have. Too bad you have to rely on someone else to tune your car.

[snaponbob]

This really isn't that big of a deal, minor annoyance at best, although speed density is nice to have. Too bad you have to rely on someone else to tune your car.

Snide, snippy, and FUNNY !!!!!!!!!!!!

[miller11386]

This really isn't that big of a deal, minor annoyance at best, although speed density is nice to have. Too bad you have to rely on someone else to tune your car.

SD is a wonderful thing! As long as you can tune your own car.

Trips over mountains can change your SD AFR's as well as the weather. I know on some SD cars around here I have seen the weather change AFR's from as much as 11.8 one day and 12.3 at WOT the next (car has the same psi/tune ect)

so as much as its a wonderful thing, its absolutely useless in that if you cannot edit on the fly, it is 100% scary. You either have to run super rich AFR's to compensate, or risk blowing the car lean at high boost. IE if i take a trip south and travel over the mountains, I could have AFR issues over the top of the mountian where the air has less O2.

I hear a lot of KABOOMS! coming in the future.....

[Arabas]

i didn't want to take place in the "war" between wester's-trifecta-other tuners vs hpt, but i think i can give a short opinion.

i hear you guys saying all are worthless, exept for hpt that u can tune yourself your car.

sorry, but not all people have the ability and knowledge to do this. furthermore some may be pussies and don't want to take the risk of blowing up their own car themselves.

for every person's need there is a solution and i am gratefull for having so many solutions out there.

personally, i wouldn't try to tune my car, coz i admit i know shit about tuning cars.

now, one thing i have loved in Americans for so many years is that they have the b@lls to say: "Hey, i DON'T know that." in comparison to other mentality people who claim to know and can do ANYTHING.
i hope this hasn't changed...


PS if i go to US immigration and tell them "i don't know some things", will i get US citizenship? 

[miller11386]

thats the point tho arabas.

SD can only be safe to use on a car that does not leave the same elevation, and you still have to be careful to watch the weather. On a High pressure day vs a low pressure day (barometric pressure) SD tunes change... a lot.

So what we are saying is that MAF plays nice and adjust with the weather. SD doesnt learn, so it has to be manually monitored by the driver. Its not for the clueless user. You must watch your wideband gauge with a SD tune to make sure you keep the rods in the motor

The only good news is usually after Vince finds something, HPT gets on board later on....

[Arabas]

i don't even know what all these mean miller
i got your point though buddy!

i am pretty sure (at least i hope so ) that vince or lyndon, or whoever launch an innovation, don't just throw it out there for all ignorants like me with the danger of kaboomed engines. they have a reputation to protect.
that hpt follows is really good in terms of options for all of us, but it also proves the hard work and value of tuners like vince, lyndon and others that try to widen the tuning options for us. and for that and their good reputation they worth the money they ask for their tunes (of course no tuners deserves the money of a kaboomed engine)

[miller11386]

the only thing that i can think of is that our wide band would help keep the AFR in check. Most vehicles on SD dont have a wide band in the system. So hopefully if it is setup correctly, the AFR can initiate a limp mode condition if the car is too lean.

It could cause the car to go to limp mode before kaboom. And for the uneducated, limp mode sometimes can really drive you nuts lol

[elff]

Arabas

Even if you own HPT, you don't have to do your own tuning.  It allows you to receive tunes via email vs sending your physical ECM back on forth.  You then point HPT to a config file from your tuner and if you are having issues or want to test different parameters you log and email those files to your tuner and he emails you a modified tune that you write to the ECM using a write calibration. 

[Arabas]

i am not against hpt, i am against "tuning your own car is the best thing" moto (given that it doesn't apply to everyone)

[elff]

Arabas
I am not doing my own tuning.
I do not have enough knowledge yet and don't trust myself
I like my engine and don't want to make it go boom

[JoshMcMadMac]

i am not against hpt, i am against "tuning your own car is the best thing" moto (given that it doesn't apply to everyone)

That is fair.  The issue is, the benefit of tuning to speed-density is only (very) safe if you are able to adjust it for different weather/location conditions.  There is a reason that the automotive industry advanced to mass-air from speed-density, and that is better adaptability for different conditions.  If you want to have a tune done for you, your best option is to have it done based off of mass-air measurements!

[Arabas]

elff, you got to stop posting!!!!! enjoy your vacation with the Dracul....ehh i mean the dead man walking...ehh i mean the soon to be married Kelu

[ophidia31]

Tried sd tune on my last car. Sure, once it was working ok, it was awesome. But having to keep up with it from changing elevations and day to day weather changes made it a nightmare afterwards. Went back to doing it the regular way.

[shabby]

Tried sd tune on my last car. Sure, once it was working ok, it was awesome. But having to keep up with it from changing elevations and day to day weather changes made it a nightmare afterwards. Went back to doing it the regular way.

Day to day weather changes? Aww come on that's terrible, doesn't he use the iat and barometric sensors?

[40rtyp]

   that! Ive seen Mafless tunes in the VW world and every car that I saw mafless ran great for a month and some change. After a few months, the car was usually smoking, rough idle or misfiring @ WOT. I never liked the idea when I was modding my Gli years ago. This annoyance in tweaking intakes popping codes is really not a big deal at all. Tuner in 3 flashes tuned my intake and it hasn't given me any problems.
 
 LOL, a Sonata 2.0T guy telling us about this doesn't help either.

[2.0 tspeed]

What is that suppose to mean

[40rtyp]

Nothing, cause your going to get butthurt. Fuc.k take a joke geez

[2.0 tspeed]

I'm not 12 so wouldn't get butt hurt cars given me no problems, I had to trade my kappa in cause I had a kid you obviously have a problem with that

[40rtyp]

I'm not 12 so wouldn't get butt hurt cars given me no problems, I had to trade my kappa in cause I had a kid you obviously have a problem with that

Well, I'm glad I'm not talking to 12 yr old. Oh, a Baby+ Sonata=congrats. Alright, lets not stray a thread......back on subject.

[NormSky]

As Shabby has mentioned there is allot of misinformation in this thread.