hondahater

iTrader: (2)

Ok my wideband is comming in tomorrow and I need a little advise on a couple of things. I've searched and some questions where answerd but not everything. My questions:

1. I've always thought it was ok to place the wideband o2 sensor anywhere on the exhaust system so I was thinking about placing it either at the end of the downpipe or ever right before the muffler even. What would you guys do? Are there any adverse effects in any given location? Also what angle are you supposed to place the bung?

2. I'm at sea level where it is hot about 95% of the year (louisiana) so this being said and with the mods listen in my sig. what would be the safest a/f numbers to shoot for? I would rather have my car run a bit more ritch and rob some horse power than to have my car run faster because of lean conditions and blow my engine. Don't really care about fuel because it's a weekend car so I don't dd this thing.

3. I have an safc to tune my car with witch is wired via the tps witch makes sense to me being that if I tune the car while cruzing I'll set the throttle points at 99% low and 100% high however I've heard that running this on the boost sensor is better and have search on this and found lots of good info and still in the process of reading everything however I have one small question. How do you tune with this setup? I know you have to look for how much boost and you tune like this but any specifics (sp) remember I'm slightly slow so I need very specific instructions if someone would be so kind.

Thanks for any help you guys can give.

hondahater

iTrader: (2)

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Sir Rupert Hobo

#1. i would place it anywhere two feet AFTER the turbo.

#2 and 3, i don't know, cause that's what people like steve kan are for

SonicRaT

iTrader: (6)

I generally place them at the end of the downpipe, generally i like to keep it from the hottest spot. I still use the SAFC on the TPS, never thought too much about it, but I do have a full-range. Generally, I change what ratio I aim for based upon what I'm doing or pushing, over 10psi I aim for pretty much 11:1, under that I'm a little more brave, but *shrug*.

hondahater

iTrader: (2)

cool thanks for the help man! I can't wait to see what this turbo will do but I don't want to blow my engine up in the mean time. So does the angle of the bung matter at all (ex. top middle, bottom) oh yeah you have an s5 witch had the better tps then the s4's, I see what your saying. I get confussed thinking about how to tune it via the pressure sensor.

ps. just saw your post hobo thanks for th info, I'll go ahead and place it at the end of the downpipe. I wish I had a dyno in my area but that would be a negative for my small *** hick town.

hondahater

iTrader: (2)

any other advise when tuning?

hondahater

iTrader: (2)

just need some tuning tips in general. ANyone have any success stories or anything just let me know! This is going to be my first time tuning a car so I want to make sure and cross all my T's and dot all my I's. Evil Aviator I know you don't suggest doing this yourself but it really isn't an option with me being that there are no dyno's around here anymore. THanks for any tips, tricks, help, and/or info.

HAILERS

SAFC tuning tips? Yes. Drive the car under load up a steep grade/hill when looking at the afr's and adjust accordingly. Third and forth gear pulls.

In fact, turn your headlights on when doing the pulls to simulate night driving with the alternator/battery under load also. Those two things will effect the fuel pump's output or if you will the electrical input to the fuel pump which in turn effects its output.

hondahater

iTrader: (2)

thanks hailers. I have no steep hills here, infact I don't think there are any hills here I guess it should be fine just running it hard in 3rd and 4th gear. They opened a new road in the middle of no where with no cars so I'm planning on doing this there. Would headlights even effect this if I have the fuel pump rewire? Thanks again man!

HAILERS

It would never hurt to take a look at the voltage to the fuel pump at least one time, while the headlights were on and the fan at high, when under full boost in third or forth gear. It should AT LEAST be over 12 volts when doing the above and much better around 13v.

But your right. The fuel pump rewire should have taken care of that.

hondahater

iTrader: (2)

ok thanks hailers. I've been searching for safc tuning advice and have found that for me when I'm driving around normally not under boost I'm always below 100% throttle so I really don't mind keeping it setup on the tps however if someone wants to talk me out of it or just have some tips etc. Let me know

88rxn/a

iTrader: (6)

bringing back teh dead ^ so how was it tuning with the safc? im doing the same thing VERY soon and was wondering if you got any tricks ill need to know?still using tps or did you switch to the boost sensor?and where did ya place the wideband?