New thread for Speed Density tuning?...

Reply Subscribe

Thread Tools

Search this Thread

Nov 30, 2009 | 03:08 PM

#196

SuPeRNeT

Evolving Member

iTrader: (13)

Joined: Feb 2005

Posts: 423

Likes: 0

From: Colorado

Quote:

Originally Posted by scheides

Then set your injector scaling to 1300 to bring trims inline, then tweak your upper load and rpm VE tables to bring your WOT AFRs back inline.

Did you have good working injector scaling and latancy values before starting this process?

I had the RPM VE up to like 125-130 or so, should i go higher then that? My maps are maxed 7.4 or so up top.. On the 1150's RPM VE was at 110 or so.

Last edited by SuPeRNeT; Nov 30, 2009 at 03:20 PM.

Nov 30, 2009 | 03:19 PM

#197

JohnBradley

Evolved Member

iTrader: (30)

Joined: Jan 2004

Posts: 11,406

Likes: 78

From: Northwest

Quote:

Originally Posted by SuPeRNeT

I had the RPM VE up to like 125-130 or so, should i go higher then that? My maps are maxed 7.4 or so up top..

MAPVE has to be off if you have the RPMVE that high. That also F's with the load something fierce as well.

Nov 30, 2009 | 03:22 PM

#198

GST Motorsports

Account Disabled

iTrader: (8)

Joined: Sep 2007

Posts: 3,366

Likes: 1

From: Hayward

SuPeRNeT,

Can you post your MAPVE and RPMVE tables?

Nov 30, 2009 | 03:24 PM

#199

03whitegsr

Evolved Member

iTrader: (8)

Joined: Nov 2006

Posts: 4,001

Likes: 17

From: Utah

Quote:

Originally Posted by GST Motorsports

Sorry I realize what I posted was a bit too generic.

Yes if your fuel map is dialed in, then you can set your injector scaling to whatever makes the fuel map match what your expected/before WOT AFR target was/is.

I've seen many a tuned evos that have the fuel map compensated for poorly scaled injectors, the trims are all over the place, but WOT fueling is fine.

I agree with you on base latency. I have yet to mess around with that at all however.

- Bryan

Ah, I understand where you are coming from now.

Edit: Off-Topic

Last edited by 03whitegsr; Nov 30, 2009 at 03:27 PM.

Nov 30, 2009 | 03:36 PM

#200

SuPeRNeT

Evolving Member

iTrader: (13)

Joined: Feb 2005

Posts: 423

Likes: 0

From: Colorado

Nov 30, 2009 | 03:41 PM

#201

l2r99gst

Evolved Member

iTrader: (2)

Joined: Mar 2004

Posts: 3,499

Likes: 4

From: CA

If you are running an injector scaling of 1300 with E85, you are way off. I would venture to guess that you should be in the neighborhood of 1000 (not having tuned the 1600s myself).

That's your issue. Get your injector scaling in line to match your old AFRs at WOT. Then play with latencies and maf scaling/smoothing to iron out the rest.

Also, after you fix your scaling, you can get your SD VE tables to look more in line with what they should look like.

Eric

Nov 30, 2009 | 03:56 PM

#202

SuPeRNeT

Evolving Member

iTrader: (13)

Joined: Feb 2005

Posts: 423

Likes: 0

From: Colorado

I had it down to 1086 still lean with the map maxed, But I will continue to decrease it further. These injectors are a pain to tune!

Nov 30, 2009 | 04:14 PM

#203

GST Motorsports

Account Disabled

iTrader: (8)

Joined: Sep 2007

Posts: 3,366

Likes: 1

From: Hayward

Interesting that at 1086 with 1600cc's it's still lean.

If I recall correctly the couple sets of 1450cc FIC BlueMax I have tuned where right around 1000 scaling on E85.

What kind of boost are we talking about here? What pump setup?

- Bryan

Nov 30, 2009 | 04:55 PM

#204

03whitegsr

Evolved Member

iTrader: (8)

Joined: Nov 2006

Posts: 4,001

Likes: 17

From: Utah

Yeah, if it's a single walbro, you'll max that thing out on 1000s on E85, much less 1150s or 1600s.

Good call on the E85 scaling though. I saw E85 and thought 1150s at 100% IDC, "that's a lot of hooch."

Nov 30, 2009 | 08:00 PM

#205

SuPeRNeT

Evolving Member

iTrader: (13)

Joined: Feb 2005

Posts: 423

Likes: 0

From: Colorado

Buschur twin, and a rail

Dec 1, 2009 | 03:21 PM

#206

Creamo3

Evolved Member

iTrader: (48)

Joined: May 2003

Posts: 2,078

Likes: 2

From: Chicago

Quote:

Originally Posted by SuPeRNeT

Buschur twin, and a rail

Sounds like a fuel supply issue; I would verify that both pumps are working correctly.

I've got my FIC 1450's scaled at 1008.

Dec 1, 2009 | 06:28 PM

#207

SuPeRNeT

Evolving Member

iTrader: (13)

Joined: Feb 2005

Posts: 423

Likes: 0

From: Colorado

Creamo are you running a FPR? Thanks for the suggestions guys..

Last edited by SuPeRNeT; Dec 1, 2009 at 06:33 PM.

Dec 1, 2009 | 06:52 PM

#208

JohnBradley

Evolved Member

iTrader: (30)

Joined: Jan 2004

Posts: 11,406

Likes: 78

From: Northwest

FPR hooked up? I scaled the 1680s on my car at 1008 when I had them in on the Green back in the day. Seems like you have a pump thats not kicking over maybe. I remember there was a HUGE thread about this in the alternative fuel forum last year and it ended up someone didnt check his second pump as well as he thought he had:

https://www.evolutionm.net/forums/al...-high-rpm.html

Dec 2, 2009 | 06:20 AM

#209

Creamo3

Evolved Member

iTrader: (48)

Joined: May 2003

Posts: 2,078

Likes: 2

From: Chicago

Quote:

Originally Posted by SuPeRNeT

Creamo are you running a FPR? Thanks for the suggestions guys..

Stock FPR

Dec 2, 2009 | 06:58 PM

#210

JohnBradley

Evolved Member

iTrader: (30)

Joined: Jan 2004

Posts: 11,406

Likes: 78

From: Northwest

Quote:

Originally Posted by Stockie

What are the benefits to SD?

Ive seen a couple 500whp+ cars gain 25-30whp just by switching to SD... can anyone explain what made this change?

Removing the restriction of the MAF and pre turbo vaccum drop as a result. Its not just that it is corked, its that the turbo has to work that much harder to maintain the same level of boost (think higher altitude) with the restriction in place. This leads to more backpressure at the same time since the turbo is working harder. This in turn makes for higher EGT and a more knock prone assembly.

cliffs- snowballs start small and get bigger