Cheap VAFC, Boost Controller + (Turbo Timer)
12-27-2003, 06:13 PM
#21
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Join Date: Aug 2003
Posts: 1,194
Re:Cheap VAFC, Boost Controller + (Turbo Timer)
The O2 sensor voltages swing up and down mainly due to the ECU swinging the mixture up and down using the sensor as a reference, under full throttle it should stay consistent, swinging under part throttle.
12-29-2003, 06:06 PM
#24
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Thread Starter
Join Date: Jun 2003
Posts: 178
Re:Cheap VAFC, Boost Controller + (Turbo Timer)
umm how far along?
umm i just got the lcd display working and i am working on the a2d converters right now, then gotta get the d2a converters to work. i have a nice holiday break starting on wendesday hopefull by this weekend I will have pics of just the AFC with boost control and Vtec up and the unit working.
umm i just got the lcd display working and i am working on the a2d converters right now, then gotta get the d2a converters to work. i have a nice holiday break starting on wendesday hopefull by this weekend I will have pics of just the AFC with boost control and Vtec up and the unit working.
12-31-2003, 08:32 PM
#26
1.5 BAR
Join Date: Jun 2003
Posts: 1,408
Re:Cheap VAFC, Boost Controller + (Turbo Timer)
major props on the EEng, I'm working on a MEng right now so I have no clue what you're talking about.
However you might want to consider cranking out a lower priced EGT gauge that works with a wideband o2 sensor.
If you could make these things for just shy of 100 dollars you could make a killing since most people tun on the street here(dyno time is too expensive) and a EGT allows for near perfect tuning on the street the only problem is they cost 200-300 bucks a pop.
EGT= Exhaust Gas Temperature Gauge.
When hooked to a wideband O2 sensor a person can monitor their exhaust temps and determine if the fuel mixture is too lean/rich.
a stock o2 sensor only reads like 13-15 a/f but a typical turbo a/f is like 12:1, so standard ebay a/f gauges don't work for our cars when tuning a boosted honda.
If you could either come up with an EGT and wideband setup, OR even better a digital a/f gauge and wideband(so we don't have to guess as EGT'S) then that would help alot of tuners out. The only options we have to tune with are dyno tuning(costly) an egt(good but just as costly) and general trial and error.
here's a few links with expected prices for what WE should pay for electronics:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2450429904
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2451261208
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2450070766
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2451137358
this doesn't have to be worked into the car's electronics at all, just an additional, accurate o2 reading is all, the stock o2 could be kept in the car's system. This would greatly help people who already have afc's but can't afford the dyno tuning of 400 bones on a little black box.
goto www.widebando2.com to check out the other faqs and stuff.http://www.diy-wb.com/02info.htm
However you might want to consider cranking out a lower priced EGT gauge that works with a wideband o2 sensor.
If you could make these things for just shy of 100 dollars you could make a killing since most people tun on the street here(dyno time is too expensive) and a EGT allows for near perfect tuning on the street the only problem is they cost 200-300 bucks a pop.
EGT= Exhaust Gas Temperature Gauge.
When hooked to a wideband O2 sensor a person can monitor their exhaust temps and determine if the fuel mixture is too lean/rich.
a stock o2 sensor only reads like 13-15 a/f but a typical turbo a/f is like 12:1, so standard ebay a/f gauges don't work for our cars when tuning a boosted honda.
If you could either come up with an EGT and wideband setup, OR even better a digital a/f gauge and wideband(so we don't have to guess as EGT'S) then that would help alot of tuners out. The only options we have to tune with are dyno tuning(costly) an egt(good but just as costly) and general trial and error.
here's a few links with expected prices for what WE should pay for electronics:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2450429904
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2451261208
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2450070766
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2451137358
this doesn't have to be worked into the car's electronics at all, just an additional, accurate o2 reading is all, the stock o2 could be kept in the car's system. This would greatly help people who already have afc's but can't afford the dyno tuning of 400 bones on a little black box.
goto www.widebando2.com to check out the other faqs and stuff.http://www.diy-wb.com/02info.htm
01-01-2004, 11:00 PM
#27
0.5 BAR
Thread Starter
Join Date: Jun 2003
Posts: 178
Re:Cheap VAFC, Boost Controller + (Turbo Timer)
done and done.
tunablility per 100 rpm up to 10000 rpm. Displays absolute intake pressure.
Vtec activation, Electronic boost control, 5th injector control, AF sensor display, ability to save 10 different af sets of settings coming shortly.
here are links to my design and pics of the lcd in operational mode and in the AF setting mode. The whole thing looks like *** right now. better quality pics will be coming shortly for now please enjoy
http://photos.yahoo.com/toalan2001
tunablility per 100 rpm up to 10000 rpm. Displays absolute intake pressure.
Vtec activation, Electronic boost control, 5th injector control, AF sensor display, ability to save 10 different af sets of settings coming shortly.
here are links to my design and pics of the lcd in operational mode and in the AF setting mode. The whole thing looks like *** right now. better quality pics will be coming shortly for now please enjoy
http://photos.yahoo.com/toalan2001
01-02-2004, 09:52 AM
#29
0.5 BAR
Thread Starter
Join Date: Jun 2003
Posts: 178
Re:Cheap VAFC, Boost Controller + (Turbo Timer)
umm i want to enable incorporate the flash upgradeability into it so People can upgrade the unit for free when I develop new features. Honestly it will take me another month to complete all the programming and maybe another month to migrate to a production design. So do not hold your breath, I want to make sure this is worth your hard earned money before I release it. There are just so many features I want to incorporate, I have a full time career so I can only do so much. I am glad you guys are receptive to it.
Salut
Alan To
Salut
Alan To
