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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Wed Jan 02, 2013 5:48 pm 
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2 Bar BOOST!
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Joined: Mon Nov 28, 2011 1:47 pm
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Location: Cape Town - Mitchells Plain
Those plugs did about 200kms

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The novalty of having an oldskool engine will wear off when some punk kid smokes you in his Susuki Baleno with hairdryer,neons and roof wing And when you pull up at the next set of lights he'll suggest to race for headjobs, cause in his mind having to give or take... Its still a win-win


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Thu Jan 03, 2013 10:16 pm 
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2 Bar BOOST!
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Joined: Mon Nov 28, 2011 1:47 pm
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Location: Cape Town - Mitchells Plain
OK, so I plugged the afr gauge back in and took the wife to the mall.
Bloody hell, the car was lean almost everywhere.
Even hitting 16.x afr while cruising.
Weird, cos Im sure of the afr I used on the previous outing.
So I moered it everywhere cos I knew the car would be richer in those areas.

Got to tuning this afternoon again again set the afr to 13.5-14.0 through most of the revs and loads.
Took the car on the freeway and gradually pushed on the pedal and found that when the car is in lift and at about 50% throttle, she leant out again.
What a mission to tune those areas but we managed and the afr are within acceptable values.

Left the gauge in and will check the ratios again tomorrow while driving the wife around.
Weird thing we found is that we would tune 1 load point, hold it there for a while to make sure the afr is good, then carry on.
Then later on, same load point, same gear, and the afr would be different. Mostly leaner, is it possible that I might have the throttle at a lesser percentage than before but still holding relatively the same revs???

Also, and this is really confusing me, moved the rev limiter to 8500, pulled 2nd gear all the way while my brother watched the revs on the screen and I the tacho on the dash.
Car limited at 7400rpm!!!

I'm getting this weird feeling that this management is faulty. Tomorrow will tell, if the afr are way off again, then this little red box is fucked.

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The novalty of having an oldskool engine will wear off when some punk kid smokes you in his Susuki Baleno with hairdryer,neons and roof wing And when you pull up at the next set of lights he'll suggest to race for headjobs, cause in his mind having to give or take... Its still a win-win


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Mon Jan 07, 2013 8:52 am 
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2 Bar BOOST!
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Joined: Mon Nov 28, 2011 1:47 pm
Posts: 2165
Location: Cape Town - Mitchells Plain
Slm / Hi all,

Been tuning the fuel map a little everyday and she is nearly where I want it.
Noticed a brief point where she leans out, when I hold 4th gear and about 1800rpm and I give a little, she will lean out to about 15.5-15.9.
Will have to plug in the pc again to see what cell it is and adjust a little.
Otherwise, holding a good afr of 13.7 - 14.4 all the way to 140km/h.
Once I am happy with the daily drive side, I will move onto the lift side and trim a bit there as well.
Will most likely go for a more richer afr of 12.9 - 13.5 in this area.

Also swapped out my dicktator with my brother's to check the rev limiter issue but didn't a get chance to test it.

Will report back when I do.

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The novalty of having an oldskool engine will wear off when some punk kid smokes you in his Susuki Baleno with hairdryer,neons and roof wing And when you pull up at the next set of lights he'll suggest to race for headjobs, cause in his mind having to give or take... Its still a win-win


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 6:08 am 
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2 Bar BOOST!
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Location: The Flats
Keep it up bru, learning alot from your trials :thumb: :worship:

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'81 RWD Corolla 3sgte III
'83 Conquest 4AGC III + Dellies - X
Mk1 Escort 1.6 Banglvan + Cam + Dellies - X
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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 9:13 am 
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2 Bar BOOST!
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Joined: Mon Nov 28, 2011 1:47 pm
Posts: 2165
Location: Cape Town - Mitchells Plain
Thanks buddy, ya still learning a lot as I go along.
Actually managed to set the cold start fairly well over the holidays but it did take some time and early morning start ups, cos once the car is warm, you wait forever for it to cool down again.
The sr20ve has a mechanical cold start you can set at the throttle, I set this to idle at 1500rpm the 1st morning.
2nd morning, I plughed in laptop and afr and started her up.
As the car got warmer, I would set the compensation values and watch the afr's as the car reached the preset temps.
The afr from -20deg to 60deg range from 12.0 to 13.5
Once the car is warm, she holds a nice afr between 14.2 and 14.5 @ 1000rpm.

I still need to check on which cell the car is leaning out a little around the 2000rpm area but I did get 118km off my last 10L of fuel and the fuel light didn't come on yet but she was empty. This is driving reasonably, changing between 2500rpm and 3000rpm, no lift. OK maybe a little.

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The novalty of having an oldskool engine will wear off when some punk kid smokes you in his Susuki Baleno with hairdryer,neons and roof wing And when you pull up at the next set of lights he'll suggest to race for headjobs, cause in his mind having to give or take... Its still a win-win


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 9:20 am 
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2 Bar BOOST!
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Joined: Sun Jan 10, 2010 11:03 pm
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Location: The Flats
Ya keep it going :thumb: Drove my car to work for first time this morning. I have lots of work ahead of me....afr was 11 to 15 :lol:

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'81 RWD Corolla 3sgte III
'83 Conquest 4AGC III + Dellies - X
Mk1 Escort 1.6 Banglvan + Cam + Dellies - X
--------------------------------------------


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 9:45 am 
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Joined: Fri Apr 11, 2008 8:08 am
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Location: Cape Town
Very nice progress Henoja...I think that when my car is done then you must show me this stuff as well.

I'm also very keen to learn & would def like to tune my own car.

I'll be watching this thread very closely.

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'89 RSi Twincam 16v - 4A-GTE Project - The Toy is a Toy! :twisted:
'06 Honda Accord 2.4 Type S - this is my Slow Family car
'07 Citi .:R - The Daily - EX - No Comment


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 9:55 am 
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2 Bar BOOST!
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Joined: Mon Nov 28, 2011 1:47 pm
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Location: Cape Town - Mitchells Plain
I will gladly share what I have learnt, show you guys if I can.
Turbo cars I don't know though but the basics for tuning would be the same.
I think the hardest part of managements is the wiring and getting the car started, once that is done it's not so bad.
Takes a lot time and patience though. OH, and petrol.

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The novalty of having an oldskool engine will wear off when some punk kid smokes you in his Susuki Baleno with hairdryer,neons and roof wing And when you pull up at the next set of lights he'll suggest to race for headjobs, cause in his mind having to give or take... Its still a win-win


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 10:01 am 
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2 Bar BOOST!

Joined: Fri Apr 11, 2008 8:08 am
Posts: 3353
Location: Cape Town
I dont mind, I have lots of patience...look how long my build is taking :laughinghard:

I would like to learn how to set everything up from scratch, but that I'm sure is way more complicated than making the finer adjustments.

I wonder what the ideal A/F ratio is for boosted cars? I'm sure its richer than the NA ratio to prevent leaning out & melting a piston...

_________________
'89 RSi Twincam 16v - 4A-GTE Project - The Toy is a Toy! :twisted:
'06 Honda Accord 2.4 Type S - this is my Slow Family car
'07 Citi .:R - The Daily - EX - No Comment


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Tue Jan 08, 2013 10:10 am 
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2 Bar BOOST!
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Joined: Sun Jan 10, 2010 11:03 pm
Posts: 2488
Location: The Flats
yip 12 ish for turbo and retarding of timing :thumb:

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'81 RWD Corolla 3sgte III
'83 Conquest 4AGC III + Dellies - X
Mk1 Escort 1.6 Banglvan + Cam + Dellies - X
--------------------------------------------


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Mon Feb 29, 2016 1:55 pm 
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Just arrived..

Joined: Wed Oct 28, 2015 8:28 pm
Posts: 3
Jis ouens,
so i have been fidling around with my installation as i coeld not get a lekker reading from the timing light. i got me a new tp500 module and solderd some 220 ohm resistors as shown in the boekie, now my timing light shows agian, what i mean is, if i advance my timing light 20 deg it shows on the pulley about 20-25deg,
but i dont know how to set the timing in the gotech software, we have people that can do it, but they want payments, and waneer jy eendag gatvol is, moet mens gatlek vir die ou om uit te kom.

now i wana do it my self. just to tell them stick it.

i have done the intro, but i cannot uploud pictures en so aan. its for a T-top 93 MR2 with 3sgte gen 2 engine. is there anyone that can shed some light on how to set timing en so aan and Fueling to , cause my eyes are burning after 10 min of idling.


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 Post subject: Re: DIY Street/Dyno tune with wideband AFR
PostPosted: Wed Mar 02, 2016 1:01 pm 
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Just arrived..

Joined: Fri Aug 14, 2015 1:41 pm
Posts: 22
Location: Pretoria
If I remember correctly, before you tune anything, first make sure that your laptop timing corresponds with the engine timing. From what you have said it seems that its definitely not the same or at least close to corresponding. You change it by changing the trigger tooth nr on the laptop (I am assuming the 60-2 is aligned according gotech's suggestions). Also make sure that the engine advance in the correct direction. If its wrong its most probably the trigger wires that you need to swop on the trigger. Gotech you need to do by hand, spitronics you can change on laptop.

What gotech are you using? If its a gotech pro v7 or higher it should be fine, anything up to v6 sell it and buy something else. You will have endless interference issues, especially if you use plug wires.

More experienced okes please chime into this hijack!


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