DIY tuners and mappers unite

DIY tuners and mappers unite

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SILICONEKID350HP

14,997 posts

231 months

Sunday 2nd June 2013
quotequote all
Disco do you know how to use the autotune ? I thought there were problems with voltage offsets etc

I am seeing 14.9 on cruise until I hit dead on to the 70mpg then it`s 15.5
When I increase my speed past 75mph it then runs around 14.7 ..

So the 15.5 is at low load between 70 and 75mph ..ether way it is richer.

Sardonicus

18,951 posts

221 months

Sunday 2nd June 2013
quotequote all
SILICONEKID350HP said:
Disco do you know how to use the autotune ? I thought there were problems with voltage offsets etc

I am seeing 14.9 on cruise until I hit dead on to the 70mpg then it`s 15.5
When I increase my speed past 75mph it then runs around 14.7 ..

So the 15.5 is at low load between 70 and 75mph ..ether way it is richer.
Daz higher the number leaner the mixture wink 15.5 is a good cruise & 12.5 ish good full throttle for example wink

SILICONEKID350HP

14,997 posts

231 months

Sunday 2nd June 2013
quotequote all
The idea is to get 15.5 from 50mph to 70mph ,not just 70 to 75mph..

The 15.5 area must be in the speed 50 to 70mph on light throttle.




Sardonicus

18,951 posts

221 months

Sunday 2nd June 2013
quotequote all
SILICONEKID350HP said:
The idea is to get 15.5 from 50mph to 70mph ,not just 70 to 75mph..

The 15.5 area must be in the speed 50 to 70mph on light throttle.



what are you talking about? confused

SILICONEKID350HP

14,997 posts

231 months

Sunday 2nd June 2013
quotequote all
Sardonicus said:
hat are you talking about? confused
why do I not see 15.5 on part throttle from 50 to 70mph

Edited by SILICONEKID350HP on Sunday 2nd June 17:53

Discopotatoes

4,101 posts

221 months

Sunday 2nd June 2013
quotequote all
SILICONEKID350HP said:
Sardonicus said:
hat are you talking about? confused
why do I not see 15.5 on part throttle from 50 to 70mph

Edited by SILICONEKID350HP on Sunday 2nd June 17:53
Your lean cruise is about 40 kpa changing your fueling will need a change in ignition too as lean afr burns slower but you'll need to gett it checked, don't touch it if your unsure

Edited by Discopotatoes on Sunday 2nd June 18:14

SILICONEKID350HP

14,997 posts

231 months

Sunday 2nd June 2013
quotequote all
whats KPA

Discopotatoes

4,101 posts

221 months

Sunday 2nd June 2013
quotequote all
SILICONEKID350HP said:
whats KPA
Kilo pascals
It's your fuel load % in the vertical column
I'm surprised your map resolution has the first 3 rows that low it's a bit of a waste of resolution you could have had more rows further up
That said are you running tps or map sensor as main load?
Edited by Discopotatoes on Sunday 2nd June 18:53


Edited by Discopotatoes on Sunday 2nd June 19:06

SILICONEKID350HP

14,997 posts

231 months

Sunday 2nd June 2013
quotequote all
Discopotatoes said:
Kilo pascals
It's your fuel load % in the vertical column
I'm surprised your map resolution has the first 3 rows that low it's a bit of a waste of resolution you could have had more rows further up
That said are you running tps or map sensor as main load?
Edited by Discopotatoes on Sunday 2nd June 18:53


Edited by Discopotatoes on Sunday 2nd June 19:06
Think its TPS,got an air tube going to the ECU what ever that does .

Discopotatoes

4,101 posts

221 months

Sunday 2nd June 2013
quotequote all
SILICONEKID350HP said:
Discopotatoes said:
Kilo pascals
It's your fuel load % in the vertical column
I'm surprised your map resolution has the first 3 rows that low it's a bit of a waste of resolution you could have had more rows further up
That said are you running tps or map sensor as main load?
Edited by Discopotatoes on Sunday 2nd June 18:53


Edited by Discopotatoes on Sunday 2nd June 19:06
Think its TPS,got an air tube going to the ECU what ever that does .
As I said before I'm not familiar with MS, you will be able to check in the software what your running as main load

Check the top box, it will probably be either maf, speed density ( or map) or alpha n ( or tps)

Edited by Discopotatoes on Sunday 2nd June 20:44

mattrosersv

579 posts

230 months

Sunday 9th June 2013
quotequote all
Hi DiscoP,

Hopefully I have attached below my AFR and VE tables for Neil's old twin turbo engine now installed in my Chimaera. This is tuned on MAP.

This is basically Neil's AFR table and I have been using Tuner Studio VE Analyze Live to tune for my install. This is a work in progress and need to do more miles with Analyze software but I have a Wideband readout in the car and it is never far away from AFR table.

I will be looking to dial in a higher AFR for cruise and idle and at some point get on the rollers. For now the car is running very well.



Oh and it is now road legal (Did not MOT with this map!) so will be looking forward to joining next RWYB session!

Edited to add spark table

Matt

Edited by mattrosersv on Sunday 9th June 08:38

dumbfunk

1,727 posts

284 months

Sunday 9th June 2013
quotequote all
I'm having great results with VE Analyzer. One quick question though, the idle is perfectly smooth but at the same time, the AFR is running super lean. Even getting the red warning dial flashing.

Is this an issue?

Everyone seems to be wanting a lean idle but can't get it, no?

SILICONEKID350HP

14,997 posts

231 months

Sunday 9th June 2013
quotequote all
Discopotatoes said:
As I said before I'm not familiar with MS, you will be able to check in the software what your running as main load

Check the top box, it will probably be either maf, speed density ( or map) or alpha n ( or tps)

Edited by Discopotatoes on Sunday 2nd June 20:44
What ECU are you running ..?


mattrosersv

579 posts

230 months

Monday 10th June 2013
quotequote all
We have been bumped off page 1 but seeing as this is v interesting......

spitfire4v8

3,991 posts

181 months

Monday 10th June 2013
quotequote all
dumbfunk said:
I'm having great results with VE Analyzer. One quick question though, the idle is perfectly smooth but at the same time, the AFR is running super lean. Even getting the red warning dial flashing.

Is this an issue?

Everyone seems to be wanting a lean idle but can't get it, no?
Have you had your afr checked against a known calibrated wideband? It doesn't take much mixture weakening to destroy idle quality. eg when Daz came over the other day we found his dash gauge/MS readouts were anything up to 1 afr out.

SILICONEKID350HP

14,997 posts

231 months

Monday 10th June 2013
quotequote all
Yes been doing some research and asking the guys who know .

One of the problems is the Ground point to the ECU / Lambda

Found this info but don`t understand a word of it .. confused


Checking the WBlin Output Voltage
One of the most consistent issues reported by customers is getting their WBlin output voltage to work with an
external logger or with an ECU. Most Tech Edge wideband models have a connector with two pins labelled as WBlin+
and WBlin- (or WB+ & WB-). Many loggers have one input only, and this is where some people have problems. But it’s
quite simple WB+ (or WBlin+) is the output signal that goes to your ECU or the IN (or IN+) pin on your logger. This
simple one wire connection works but is not ideal, because the WB+ signal will also include some ground switching
noise from the controller itself. This noise can make your wideband readings inaccurate, so it’s worth understanding.
To solve the noise issue, the WB- input pin is used. WB- connects to the SIGNAL GROUND at the logger or ECU.
Sometimes the logger or ECU does not have a SIGNAL GROUND, so WB- should be connected to the GND point
physically closest to the WB+ signal. But, and here’s the complicated bit, for this to work properly, you need to remove
the WBLIN-GND shunt inside the unit. If not, then you may as well just use the one wire (and you’ll still have the
switching noise). You have to refer to your unit’s documentation to determine where the WBLIN-GND shunt is found.
If your logger or ECU is a bit fancy then it may have an IN- (or similarly named) pin as well. This indicates it has a
differential input, which can be put to good use by simply connecting WB- to IN-. In this case it’s not necessary to
remove the WBLIN-GND shunt (and it’s best left in!).
The worst possible situation is when the WBLIN-GND is taken out and nothing is connected to the WB- (or WBlin-)
input. In this case the WB+ output can float around and give meaningless results. If you find WB+ doing strange
things, first make sure the WB- input is connected to GND or the WBLIN-GND shunt is present. If you don’t understand
the need for WB- or the WBLIN-GND shunt, then more information is on the website at :





Edited by SILICONEKID350HP on Monday 10th June 12:24

dumbfunk

1,727 posts

284 months

Monday 10th June 2013
quotequote all
spitfire4v8 said:
Have you had your afr checked against a known calibrated wideband? It doesn't take much mixture weakening to destroy idle quality. eg when Daz came over the other day we found his dash gauge/MS readouts were anything up to 1 afr out.
Thing is, the idle quality is perfect ... Just lean. So maybe it's the gauge (LC-1).

(Actually, I sent you an email about it last week. Needs a service too if you're still in the game. Did it arrive?)

Discopotatoes

4,101 posts

221 months

Tuesday 11th June 2013
quotequote all
SILICONEKID350HP said:
Discopotatoes said:
As I said before I'm not familiar with MS, you will be able to check in the software what your running as main load

Check the top box, it will probably be either maf, speed density ( or map) or alpha n ( or tps)

Edited by Discopotatoes on Sunday 2nd June 20:44
What ECU are you running ..?
DTA

Discopotatoes

4,101 posts

221 months

Tuesday 11th June 2013
quotequote all
mattrosersv said:
Hi DiscoP,

Hopefully I have attached below my AFR and VE tables for Neil's old twin turbo engine now installed in my Chimaera. This is tuned on MAP.

This is basically Neil's AFR table and I have been using Tuner Studio VE Analyze Live to tune for my install. This is a work in progress and need to do more miles with Analyze software but I have a Wideband readout in the car and it is never far away from AFR table.

I will be looking to dial in a higher AFR for cruise and idle and at some point get on the rollers. For now the car is running very well.



Oh and it is now road legal (Did not MOT with this map!) so will be looking forward to joining next RWYB session!

Edited to add spark table

Matt

Edited by mattrosersv on Sunday 9th June 08:38
That fuel map looks cautiously rich to me . Try about 13.7 at 60/70 kpa, at idle and 15/15.4 afr at 40 kpa around 2200 to 2500 rpm cruise but graduate the cells around them so its not a massive jump, as you dont want it lurching whist its interpolating between cells.
Most of the other sites below 65 kpa and below 2200 would like about 14 to 14.5 richen it up to 12.5 on full load at 100 kpa then max out at 11 under full boost. Don't run any more boost than 1.5 bar you will start lifting the heads.
Trry something similar to that but it's all a bit trial and error tuning on the road, just don't go to lean and DON'T try running to much advance.
I will post a screen shot of my fuel map and afr target but I'm running massive injectors so don't copy it as it won't work for you

Edited by Discopotatoes on Tuesday 11th June 12:44

spitfire4v8

3,991 posts

181 months

Tuesday 11th June 2013
quotequote all
dumbfunk said:
spitfire4v8 said:
Have you had your afr checked against a known calibrated wideband? It doesn't take much mixture weakening to destroy idle quality. eg when Daz came over the other day we found his dash gauge/MS readouts were anything up to 1 afr out.
Thing is, the idle quality is perfect ... Just lean. So maybe it's the gauge (LC-1).

(Actually, I sent you an email about it last week. Needs a service too if you're still in the game. Did it arrive?)
Yep got it and replied the next day .. check your inbox and if it's not there I will try sending it again, cheers.