Help me tune my Jetta....

[Fluidic]

My dyno and air/fuel ratio plot from this Saturday.

http://www.fluidicdigital.com/FluidicDigital/hp-torque-dyno1.jpg

http://www.fluidicdigital.com/FluidicDigital/air-fuel-plot.jpg

I'm wanting to purchase a custom tuned chipped. As per my chiptuning specialist, I had C1 print out my air-fuel ratio plot.

How do I know what's lean and what's rich? What can I improve? Rage? Roland? Anyone?

Thanks! :)

Peter

[Fluidic]

Here's a quick-pic.

[redline]

are you using a FMU now? You are blow up lean till about 4000rpm then are fine till 5000rpm and then go pig rich.

[LancerShelby]

15:1 is your "theroretical" perfect mixture. 15 parts of air to 1 part of fuel by weight. If you go to 12:1, you have less air to the same amount to fuel, you have a richer mixture aka more fuel. If you go 16:1, more air, same fuel, leaner mixture. 13:1-12:1 I believe is where you want to be for a turbo engine.

[Fluidic]

Originally posted by redline
are you using a FMU now? You are blow up lean till about 4000rpm then are fine till 5000rpm and then go pig rich.

The only fuel management I've got going for my car right now is my UPsolute chip. It's like an all in one -- controls boost, timing, fuel -- everything.

This dyno run was run using 91-octane. My current program recognizes and is fully capable of using 94-octane -- it just doesn't advance timing unlike other programs out there.

Peter

[2000impreza]

off boost 14.4-14.5 and on boost, probably somewhere in the 12's.

[VWbloke]

I'm beginning to think there was something up with the sensor at C1 - all the air/fuels looked the same. They start off lean (super lean in my case) and then end up going ultra-rich.

[2000impreza]

Originally posted by VWbloke
I'm beginning to think there was something up with the sensor at C1 - all the air/fuels looked the same. They start off lean (super lean in my case) and then end up going ultra-rich.

it is suppose to be lean off the start because that is when you are off boost. once you start building boost you want to drop the a/f to low 12's.

[VWbloke]

Mine dropped below 10 at 5500RPM and was an average of 14.7 from 2000RPM - 4000RPM. I'll post the graph after I scan it at work tomorrow

[Redlyne_mr2]

Originally posted by 2000impreza


it is suppose to be lean off the start because that is when you are off boost. once you start building boost you want to drop the a/f to low 12's.
Precisely as indicated by FDs chart..turn up the boost a bit more and make that chip earn its money

[VWhooligan]

he can't turn the boost up too much more on his k03s turbo, its just too small, its going to be out of its efficiency range.

[Fluidic]

It's either I upgrade to a bigger turbo... or have our local UPsolute rep (chip tuner) adjust the air/fuel mapping. :)

Peter

[lammer]

Originally posted by Fluidic Digital
It's either I upgrade to a bigger turbo... or have our local UPsolute rep (chip tuner) adjust the air/fuel mapping. :)

Peter

bigger...turbo...so you can go back to the future man

[Fluidic]

No dude... back to the FRIGGEN future!!!! :rofl: :rofl:

Peter

[VWhooligan]

Originally posted by Fluidic Digital
It's either I upgrade to a bigger turbo... or have our local UPsolute rep (chip tuner) adjust the air/fuel mapping. :)

Peter

i dont even think these two things should be in the same sentence. the custom chip would cost a few hundred dollars and boost you maybe 10hp?

bigger turbo could cost 2g's and boost you 60hp?

its all about the size of the wallet, and are you going to be happy with that 10hp. i suggest getting the ATP stage2 kit and be happy.

[lammer]

hahaha

Friggin' future yo!

[Loose]

holy boost spike batman

[Fluidic]

Originally posted by VWhooligan


i dont even think these two things should be in the same sentence. the custom chip would cost a few hundred dollars and boost you maybe 10hp?

bigger turbo could cost 2g's and boost you 60hp?

its all about the size of the wallet, and are you going to be happy with that 10hp. i suggest getting the ATP stage2 kit and be happy.

I agree -- it's all about the bling -- but this weekend -- we saw the outcome -- and it was loud!!! :bigpimp: :bigpimp: :thumbsup:

Peter

[rage2]

Judging from your A/F plot...

From 4000-5000rpm, you're running 11.8 A/F. A good target A/F with a good balance of safety (low egt, cooler mixture, less chance of detonation) and power.

You're running a bit rich past 5000rpm. First thing I'd do is lean that out and see if there was a reason why it was made so rich. If all is well when you lean out that area, you'd easily gain 10-20whp. But if that area was made to run super rich because of compressor inefficiency of the stock turbo, then you're just gonna get detonation along with the extra power, which is a nono.

Does simon have custom software for tuning your own a/f ratios on the upsolute chip? Or is it just fixed chips that he gets from Germany or wherever and just burn's 'em?

[Fluidic]

He sets the parameters that the chip should be running at (from the a/f ratio plot), he then e-mails them off to UPsolute HQ in Austria -- from there, the software is adjusted and then a revised e-mail is sent back to him -- he then installs the newly revised software revision into my computer.

At the end of the day -- it's quite simple to tune -- just time consuming. So... once we make the adjustments here in Calgary -- let's hope it was worth all of our time -- cause it's not on the fly tuning – a few days at the least.

Peter

[rage2]

You should buy a Wideband O2 sensor/logger... install it in your car. Because doing it via email, a few dyno days to get the right A/F curve would cost the same as WBO2 sensor.

[Fluidic]

Sounds like a good plan to me. Who here in Calgary is able to order them in on relatively short notice? Any specific bands I should be looking for?

Peter

[rage2]

Talk to Marc.

[Fluidic]

I'll see him today. I'll let you know.

Thanks

[Khyron]

Be aware there's extra work Peter - you will need to drill a hole in your downpipe for an additional sensor, and the wideband kits are 300+ US.

I looked into it last year and have forgotten the details. I wanted to use a cool 4 led dummy light that marked different af levels but the cost got real stupid. To use a narrowband AF gauge, you still need to get an additional sensor, etc.

Here's 1 post on the subject:

http://forums.vwvortex.com/zerothread?id=1010093

Khyron

[Fluidic]

Yep... well I go threw downpipes like I do gasoline -- so whatever. How much is a new motor? I think I can spare $300US. I'll see what Marc says later today.

Peter

[rage2]

Originally posted by Khyron
Be aware there's extra work Peter - you will need to drill a hole in your downpipe for an additional sensor, and the wideband kits are 300+ US.
Like I said, at $100-$150 per dyno session, if he needs 6 days to tune it, the WBO2 and doing runs in a secluded area (hehe) will be a much cheaper solution. Plus he can use it in the future for mods.

As for prices, I've seen cheap kits go for $400cdn, and up to $2000 for some bling kits.

My FJO kit (sensor + PC interface) costed around $1200 a long time ago, I heard it's a lot cheaper now.

[2000impreza]

i'm still waiting for my fjo kit to get here... taking forever...:guns: but yeah. hope its money well spend.:guns: