Topic: Speed density tuning no MAff needed

[Gentleman Jack]

There's a lot of ego in this thread too.  Good grief.

For the record, I can piss 3 feet, 4 and 1/4 inches.  That was measured on a warm night, so median air density had some effect on the contest results.  I did not use a MAF during my pissing contest.  My IAT was 98.8 and I was using all stock components.

My tuners name shall remain a secret as I don't really want any of you using the same tuner as me.

GJ

[SHiNY]

There's a lot of ego in this thread too.  Good grief.

For the record, I can piss 3 feet, 4 and 1/4 inches.  That was measured on a warm night, so median air density had some effect on the contest results.  I did not use a MAF during my pissing contest.  My IAT was 98.8 and I was using all stock components.

My tuners name shall remain a secret as I don't really want any of you using the same tuner as me.

GJ

Before or after partaking in some beer?

[|V3nom|]

There's a lot of ego in this thread too.  Good grief.

For the record, I can piss 3 feet, 4 and 1/4 inches.  That was measured on a warm night, so median air density had some effect on the contest results.  I did not use a MAF during my pissing contest.  My IAT was 98.8 and I was using all stock components.

My tuners name shall remain a secret as I don't really want any of you using the same tuner as me.

GJ

lol good stuff and good point.

[Sol Asylum]

There's a lot of ego in this thread too.  Good grief.

For the record, I can piss 3 feet, 4 and 1/4 inches.  That was measured on a warm night, so median air density had some effect on the contest results.  I did not use a MAF during my pissing contest.  My IAT was 98.8 and I was using all stock components.

My tuners name shall remain a secret as I don't really want any of you using the same tuner as me.

GJ

I have heard that if you are at an elevated height that you can get more range because you are taking advantage of the lower air density at the higher elevation, not to mention the change in the "power curve," you should ask your tuner if that is true of just BS.  Even if it's not true all we have to do is get enough people on the internet to say it is and then the laws of nature have to comply with it, take that mother nature, .

[Ames Performance Tuning]

GJ,

I am jealous.  Over the last 5 years, I would be lucky to make it 2 ft regardless of air density and humidity.  You must be living right!

Just some additional info to bring out the egos again.  Some other car companies use this form of tuning safely, for example the Hyundai Sonata with 2.0 Turbo.  GM does provide the necessary information in the ecm to adjust fuel safely without using MAF.  I do plan on testing this feature soon while monitoring A/F and knock.  I am a "show me" kind of person.  Current testing, tune has been spot on.  The benefit as listed earlier will allow easier tuning flexibility for a variety of intakes and BOV's.  This will help create less expensive tuning products for folks with intake mods.

[40rtyp]

^^^ You going to post results???

[tazz]

When fuse #43 was not seated properly I was running in Speed density mode and it was OK but cold starts were a bit rough.  Though I think Dave said #43 also powers the O2 sensors it fail those also I would assume and why it was reading 1 lambda when it was commanding .85 lambda under stock boost of 17 Psi Other than that my engine didnot go boom or knock. [ Guests cannot view attachments ]

[Ames Performance Tuning]

I will post results when I get the tune to test.  I assume you are not talking about the results of me trying to pi$$ as far as GJ.

[40rtyp]

You are assuming correctly there guy.

[miller11386]

I will post results when I get the tune to test.  I assume you are not talking about the results of me trying to pi$$ as far as GJ.

I would like both results please

[JoshMcMadMac]

This will help create less expensive tuning products for folks with intake mods.

How so?

[Ames Performance Tuning]

LOL - Video - I guess.  Seriously, I will work with some logging before and after while looking on some different days based on temperature and humidity.  I will change intake etc. and ensure I validate the current testing.  Another test car is running fine with an just an air filter attached to turbo while using aftermarket BOV.

[Ames Performance Tuning]

To finish out this thread, we did tune my Manual Coupe it ran good and the logs were as expected.  This is an option we can use with aftermarket BOV's and other intakes that prove troublesome to tune.

[40rtyp]

No Logs of giving us some information on this Mafless tune? How can you prove that it's an actual viable option?

[Ames Performance Tuning]

There really is not any way I can prove it that someone could not say something like those are not really the logs or look at that metric or whatever.
All I am saying is my car ran fine.  I did not see any KR that I was worried about.  The metrics I knew to review where fine in my limited log.  When the more detailed logs where reviewed by Trifecta they were okay.   I know there is a group of folks that will not believe the results and that is fine.  This info is for the folks that already trust the product.

I apologize for setting the expectation that I would provide logs.  The Trifecta logs are proprietary and the logs I created may not be as relevant.  Anyway, folks with a MAF can still have their tune as normal with stock BOV for example.  This feature is for folks with the aftermarket BOV and intake that can't currently tune their cars well with these parts.

[40rtyp]

Roger

[tazz]

Apparently a member on HPT has been able to basically run SD by disconnecting and failing his MAF almost like I mentioned above and adjusting some other parameters to make it run smoother.  I could not see why it would not work since the SD tuning is already in the stock ECM as a backup if the MAF failed.
http://www.hptuners.com/forum/showthread.php?t=39910

[BNRacing]

I helped develop this new tuning and it is NOT speed density. You still need the MAF to be hooked up so it can ready humidity, IAT, etc. Yes disconnecting and zeroing out the MAF will force the ECM to run off the SD tables, but that's not what we're doing.