Smooth Throttle for UpRev

Baer383 · 11-26-2012, 04:18 PM

Quote:

Originally Posted by elperuano

That's interesting, so it's like u constantly have accelerator pressed even when ur not pressing down on it? As far as lean spots go do you mean when off the gas coming up at a red light or stop sign?
I don't have any lean spots that I can tell when data logging or checkin my a/f gauge, but sometimes I get a weird reading when in boost from 2nd or 3rd with lots of wheel spin. Was actually wondering if its readin it right or wrong during wheel spin since I'm not actually gripping n maybe it might throw reading off for a second. Highway runs tho my a/f seems spot on around 11.2

No I'm talking about as if you are at a stop sign and you take off the moment the gas pedal volts(idle is about .73) move between .73 and about 1.09 if you hold it there and watch the ROM editor I saw it was really lean this all happens quickly but never the less is would cause a abrupt transition from the idle circuit to on the gas causing a hesitation some people refer to this as tip in once I got the correction factors close the transition was very smooth hard to tell when I'm on the gas or not.

elperuano · 11-26-2012, 04:31 PM

Ahhh nice! Thanks for clearin that up. I'll look for that on my next datalogging.

wstar · 11-26-2012, 05:26 PM

Yeah the tip-in thing with lean fueling is definitely part of the problem on the stock setup. I somewhat remedied that on my car by going over to the A:F tables and making things a little over-rich in the low RPMs at low throttle. Upside is there's fuel available for that tip-in, downside is I get some occasional backfires when transitioning from engine braking back to neutral throttle at low RPMs and low throttle input (e.g. engine braking gently down to a stoplight and popping into neutral just as it's reaching the point where the engine would naturally start to lug out for being too low. If I don't time it just right, nice little fireball pops down the exhaust).

Are you saying you corrected your lean spots in that same A:F table, or elsewhere?

Baer383 · 11-26-2012, 07:35 PM

Quote:

Originally Posted by wstar

Yeah the tip-in thing with lean fueling is definitely part of the problem on the stock setup. I somewhat remedied that on my car by going over to the A:F tables and making things a little over-rich in the low RPMs at low throttle. Upside is there's fuel available for that tip-in, downside is I get some occasional backfires when transitioning from engine braking back to neutral throttle at low RPMs and low throttle input (e.g. engine braking gently down to a stoplight and popping into neutral just as it's reaching the point where the engine would naturally start to lug out for being too low. If I don't time it just right, nice little fireball pops down the exhaust).

Are you saying you corrected your lean spots in that same A:F table, or elsewhere?

If you do like I did you won't have to backfire, I just drive and watch the correction factor and during live tuning while holding the pedal there while you feel it sputter add the fuel on the fuel comp table but don't go passed 100% leave it a little and I mean a little on the rich side maybe 95-97% and I don't backfire on decel from 7000k down to 800 idle.

DIGItonium · 11-26-2012, 08:43 PM

Hmm that's pretty interesting. Good to know. I definitely need to get out of this canned tune O_o. We shall see if I still have this car within the next year or so.

Unrelated. I notice there are times I have issues starting the car, and it doesn't matter how hot it is outside. When it starts I smell a bit of fuel as if the engine was flooded.

Sh0velMan · 11-26-2012, 08:51 PM

You're running a canned tune on a forced induction car?

Dude, not to be rude, but that's fcking retarded. The canned tune is to get you to the tuner to have it dyno tuned properly, not to drive around on for months (years?)

Holy crap!

Baer383 · 11-26-2012, 08:54 PM

Quote:

Originally Posted by DIGItonium

Hmm that's pretty interesting. Good to know. I definitely need to get out of this canned tune O_o. We shall see if I still have this car within the next year or so.

Unrelated. I notice there are times I have issues starting the car, and it doesn't matter how hot it is outside. When it starts I smell a bit of fuel as if the engine was flooded.

Starting the car to me has been the hardest part(tuning for 516rwhp was easy in comparison)
There really has to be a fine balance between not enough fuel to too much fuel.
Do you have test pipes?

Baer383 · 11-26-2012, 08:55 PM

Quote:

Originally Posted by Sh0velMan

You're running a canned tune on a forced induction car?

Dude, not to be rude, but that's fcking retarded. The canned tune is to get you to the tuner to have it dyno tuned properly, not to drive around on for months (years?)

Holy crap!

If the tune came from Sam @ GTM then yes you can drive on it.

Sh0velMan · 11-26-2012, 08:57 PM

Quote:

Originally Posted by Baer383

If the tune came from Sam @ GTM then yes you can drive on it.

That's ignorant. No one can make a canned tune that is 100% correct for a car they've never touched and never personally had on the dyno. Much less a freaking twin turbo tune.

Oh well, his car, his problem. seems he's having drivability issues already.

Baer383 · 11-26-2012, 09:04 PM

Quote:

Originally Posted by Sh0velMan

That's ignorant. No one can make a canned tune that is 100% correct for a car they've never touched and never personally had on the dyno. Much less a freaking twin turbo tune.

Oh well, his car, his problem. seems he's having drivability issues already.

I had one on mine (from Sam @ GTM)and I put down 445rwhp and Jon the tuner @ Z1 said it's good don't Fvck with it.
So it is apparent to me that you have no Friggin clue to what you are talking about.

Sh0velMan · 11-26-2012, 09:17 PM

Quote:

Originally Posted by Baer383

I had one on mine (from Sam @ GTM)and I put down 445rwhp and Jon the tuner @ Z1 said it's good don't Fvck with it.
So it is apparent to me that you have no Friggin clue to what you are talking about.

Ok.

Some reading.

There's a guy local here whose car barely ran on the canned tune from Sam @ GTM.

You got lucky, I'm happy for you!

Baer383 · 11-26-2012, 09:25 PM

Quote:

Originally Posted by Sh0velMan

Ok.

Some reading.

There's a guy local here whose car barely ran on the canned tune from Sam @ GTM.

You got lucky, I'm happy for you!

I have received 2 tunes from Sam the one I stated and the the one I was on a month ago which put down 483rwhp and Jon said I could have left it but he leaned it out a little to pick up some more power,most people who get tunes from Sam are about 90% whatever happened to your friend who knows (2nd party hear say)but I have no issues riding around on Sam's tune until I go to the dyno if it is 1 month or 6 months.

elperuano · 11-26-2012, 09:44 PM

I got my car fine tuned from Jon @ Z1 also. Sam's tune was very rich and he leaned it out a bunch. I gained a lot from him leaning it out. Digi I'm sure your tune is fine especially if u ran it this long but like I said earlier theres no need to run that rich. It's prolly like a super extra safe rich can-tune. Plus drivability is prolly compromised a bit. You're good to ride but after spending all that cash on the kit and supporting mods I personally wouldn't skimp out on the tuning part.

DIGItonium · 11-27-2012, 01:04 AM

Quote:

Originally Posted by Baer383

Starting the car to me has been the hardest part(tuning for 516rwhp was easy in comparison)
There really has to be a fine balance between not enough fuel to too much fuel.
Do you have test pipes?

No test pipes. F.I. HFC and 12" TDX exhaust still. I remember reading about startup issues due to leaky injectors. [shrugs] It comes and goes. There were times I had this issue once or twice a day, then it goes away for several weeks.

Wow you're making nice power. I think 500 whp is my target as well with this new setup, but I care more about quicker and smoother response.

Quote:

Originally Posted by Sh0velMan

You're running a canned tune on a forced induction car?

Over 23k miles (knock on wood). The car was with Baker Tuning for over 2 months, and I picked it up during Labor Day weekend last year. Sam says he wasn't given the datalogs so he could send the correct tune, so it was still running the canned tune. So I recorded my logs and sent it to him and heard no response from either Sam or Mike. I wonder if it's because of the MBC that they don't want to touch my car. At Baker, they were playing it safe at 6 PSI (no boost controller or wastegate tweaks) and this canned tune not knowing what my driving habits were.

Nearest tuner for me is in KC, which is 3 hours away. I wouldn't mind having Z1 tune it after the new upgrades. [sigh]

Baer383 · 11-27-2012, 06:16 AM

Quote:

Originally Posted by DIGItonium

No test pipes. F.I. HFC and 12" TDX exhaust still. I remember reading about startup issues due to leaky injectors. [shrugs] It comes and goes. There were times I had this issue once or twice a day, then it goes away for several weeks.

Wow you're making nice power. I think 500 whp is my target as well with this new setup, but I care more about quicker and smoother response.

Over 23k miles (knock on wood). The car was with Baker Tuning for over 2 months, and I picked it up during Labor Day weekend last year. Sam says he wasn't given the datalogs so he could send the correct tune, so it was still running the canned tune. So I recorded my logs and sent it to him and heard no response from either Sam or Mike. I wonder if it's because of the MBC that they don't want to touch my car. At Baker, they were playing it safe at 6 PSI (no boost controller or wastegate tweaks) and this canned tune not knowing what my driving habits were.

Nearest tuner for me is in KC, which is 3 hours away. I wouldn't mind having Z1 tune it after the new upgrades. [sigh]

When I took my other car apart I saw several injectors leaking however I fixed it when I put the kit on my Nismo so starting was alott easier to dial in, I didn't think about that until you said it.

11-26-2012, 05:26 PM	#123 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Yeah the tip-in thing with lean fueling is definitely part of the problem on the stock setup. I somewhat remedied that on my car by going over to the A:F tables and making things a little over-rich in the low RPMs at low throttle. Upside is there's fuel available for that tip-in, downside is I get some occasional backfires when transitioning from engine braking back to neutral throttle at low RPMs and low throttle input (e.g. engine braking gently down to a stoplight and popping into neutral just as it's reaching the point where the engine would naturally start to lug out for being too low. If I don't time it just right, nice little fireball pops down the exhaust). Are you saying you corrected your lean spots in that same A:F table, or elsewhere? __________________ 7AT Track Car! Journal thread / Car setup details

11-26-2012, 08:43 PM	#125 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Hmm that's pretty interesting. Good to know. I definitely need to get out of this canned tune O_o. We shall see if I still have this car within the next year or so. Unrelated. I notice there are times I have issues starting the car, and it doesn't matter how hot it is outside. When it starts I smell a bit of fuel as if the engine was flooded. __________________

11-26-2012, 08:51 PM	#126 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	You're running a canned tune on a forced induction car? Dude, not to be rude, but that's fcking retarded. The canned tune is to get you to the tuner to have it dyno tuned properly, not to drive around on for months (years?) Holy crap! __________________ Buy My Car! \| Build Thread

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11-26-2012, 04:31 PM	#122 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	Ahhh nice! Thanks for clearin that up. I'll look for that on my next datalogging.

11-26-2012, 09:44 PM	#133 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	I got my car fine tuned from Jon @ Z1 also. Sam's tune was very rich and he leaned it out a bunch. I gained a lot from him leaning it out. Digi I'm sure your tune is fine especially if u ran it this long but like I said earlier theres no need to run that rich. It's prolly like a super extra safe rich can-tune. Plus drivability is prolly compromised a bit. You're good to ride but after spending all that cash on the kit and supporting mods I personally wouldn't skimp out on the tuning part.