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Old 01-02-2010, 09:18pm   #21
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Hi Ed I have never met you but you have been recommended to me by every Rat Pack member I have met and I would like to take advantage of this Q & A.

I have a 97 A4 for a year and a half I have always wondered if it has some tuning done to it because of the way it shifts (hits fairly hard) I have never been in any other C5 so I really have nothing to compare it to. After checking the rear end I found out that the original 2.73 were changed to 3.42 out of a Z found this out by the tag on it. I read a post one time that stated that if the gears were changed it had to be tuned to shift correct with the new gears is this true? if so then I'm sure it has been tuned and I ques the torque management has been removed or reduced? if the torque management has been changed is it a permanent or can it be put back to the default? is their anyway to find out what has been changed without going through the motions of a real tune? if not maybe one day I'll bring it to you to have it dyno & tuned and you can tell me what I have.

I'm really not looking to change anything right now I'm still trying to figure out everything that has been done to it before it was mine. I feel like I should figure out what I have before I start changing anything.

Thanks for any info,
Kevin
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Old 01-02-2010, 10:52pm   #22
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Originally Posted by 2ez 2spd View Post
Hi Ed I have never met you but you have been recommended to me by every Rat Pack member I have met and I would like to take advantage of this Q & A.

I have a 97 A4 for a year and a half I have always wondered if it has some tuning done to it because of the way it shifts (hits fairly hard) I have never been in any other C5 so I really have nothing to compare it to. After checking the rear end I found out that the original 2.73 were changed to 3.42 out of a Z found this out by the tag on it. I read a post one time that stated that if the gears were changed it had to be tuned to shift correct with the new gears is this true? if so then I'm sure it has been tuned and I ques the torque management has been removed or reduced? if the torque management has been changed is it a permanent or can it be put back to the default? is their anyway to find out what has been changed without going through the motions of a real tune? if not maybe one day I'll bring it to you to have it dyno & tuned and you can tell me what I have.

I'm really not looking to change anything right now I'm still trying to figure out everything that has been done to it before it was mine. I feel like I should figure out what I have before I start changing anything.

Thanks for any info,
Kevin
If it doesn't bounce off the rev limiter on a WOT shift, it's been tuned. At least the trans portion has been tuned.

Only way to know what's been done is to pull the tune and do a compare.

You can always put it back to stock. TM or whatever. It can always be un-done
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Old 01-10-2010, 06:34pm   #23
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Adding a wet N20 system, with Microedge controller, to my C5. Vortex Rammer, Pacesetter shorty headers, Borla catback for mods. The only things changed when I had it tuned were the shift points, the TM reduced, and the fan on/off temps changed.
Won't be tracking the car. Adding the N20 for the fun factor and to get up to speed quicker when we have our MESV cruises.
Since I don't run a wideband, should I have it tuned after the install and pull a couple degrees of timing to be safe? Or, am I going to be OK with that small of a shot of juice and leave things alone?
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Old 01-10-2010, 09:48pm   #24
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Adding a wet N20 system, with Microedge controller, to my C5. Vortex Rammer, Pacesetter shorty headers, Borla catback for mods. The only things changed when I had it tuned were the shift points, the TM reduced, and the fan on/off temps changed.
Won't be tracking the car. Adding the N20 for the fun factor and to get up to speed quicker when we have our MESV cruises.
Since I don't run a wideband, should I have it tuned after the install and pull a couple degrees of timing to be safe? Or, am I going to be OK with that small of a shot of juice and leave things alone?
Depends on a few factors. How much do you want to spray? If it's tuned already, are you sure they didn't lean on it, or add any timing? If it's been tuned, I think you should have it checked at least. Dynoed, scanned, check A/F with a WB.

If you're only going to spray it with say 75 hp, you probably don't have to do a thing. If you wanna hit it with 100+, then you need to tune for it.
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Old 01-10-2010, 10:57pm   #25
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Depends on a few factors. How much do you want to spray? If it's tuned already, are you sure they didn't lean on it, or add any timing? If it's been tuned, I think you should have it checked at least. Dynoed, scanned, check A/F with a WB.

If you're only going to spray it with say 75 hp, you probably don't have to do a thing. If you wanna hit it with 100+, then you need to tune for it.
Thanks Ed. I appreciate some expert input. Going to start with the 75 jet, and see how it performs.
I plan on coming down with Kevin when he picks up his "cruiser" from the 427 build. Can't wait to see the shop.
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Old 01-10-2010, 11:18pm   #26
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If you take out timing for the nitrous hit won't that affect performance when you're not spraying? How does that work exactly?
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Old 01-11-2010, 12:32am   #27
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If you take out timing for the nitrous hit won't that affect performance when you're not spraying? How does that work exactly?
Yes it will. From what I understand, there are certain controller interfaces that will pull timing ONLY when you are spraying. This leaves your timing alone when driving normal, so as not to decrease your power.
I know the Microedge controller has an interface that works this way.
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Old 01-12-2010, 04:51pm   #28
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If you take out timing for the nitrous hit won't that affect performance when you're not spraying? How does that work exactly?
Short answer is yes. But, on a small hit (75 hp) chances are you can tune it where you can use your spray without having to pull any timing. Rule of thumb is 2 degrees per 50 hp, but I rarely pull out any timing on a 75 shot. I usually start with tuning the timing on the low side of the "window" (the range of timing, usually 4 degrees or so, where increasing or decreasing it yields little to no changes in power output) and just let her roll.

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Yes it will. From what I understand, there are certain controller interfaces that will pull timing ONLY when you are spraying. This leaves your timing alone when driving normal, so as not to decrease your power.
I know the Microedge controller has an interface that works this way.
I def like using some type of controller with the bigger hits. I was running a progressive controller on a big fogger back in about '93-'94. Tuned a TS car with 2 stages, one 500hp fogger on a controller, and one 250hp plate.

The newer electronic ones are cool. Kyle (stonabones) runs one. Very, very tunable. Comes in handy trying to get a C5 down the track on a 250 shot without leaving a trail of broken goodies!!
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Old 01-12-2010, 07:45pm   #29
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Hey Ed,

I was doing a little spirited driving the other day, about 30 degrees outside. I threw a P1011 code, which is for the MAF. I haven't troubleshot it yet, but I plan on checking the wires, cleaning the MAF sensor then start logging my next spirited cruise. Do you know of any other issues that could throw off the MAF sensor?

Do you know of anyone with a C6 putting in a honeycomb before the MAF to straighten/smooth out the air flow? Do you think this is worth looking into or would I be better getting this tuned out?
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Old 01-13-2010, 07:31pm   #30
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Hey Ed,

I was doing a little spirited driving the other day, about 30 degrees outside. I threw a P1011 code, which is for the MAF. I haven't troubleshot it yet, but I plan on checking the wires, cleaning the MAF sensor then start logging my next spirited cruise. Do you know of any other issues that could throw off the MAF sensor?

Do you know of anyone with a C6 putting in a honeycomb before the MAF to straighten/smooth out the air flow? Do you think this is worth looking into or would I be better getting this tuned out?
I'll do some research tomorrow and post up.
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Old 01-13-2010, 08:11pm   #31
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I'll do some research tomorrow and post up.
Don't be surprised if I screw up my tune so bad I need to have it towed to you for a fix.
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Old 01-14-2010, 01:12pm   #32
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Don't be surprised if I screw up my tune so bad I need to have it towed to you for a fix.
STEP AWAY FROM THE TUNING SOFTWARE!!!!!

Send me an email and I'll send ya an update. [email protected]
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Old 01-14-2010, 09:47pm   #33
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STEP AWAY FROM THE TUNING SOFTWARE!!!!!

Send me an email and I'll send ya an update. [email protected]
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Old 01-15-2010, 09:24pm   #34
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Hey Ed,i have a 346 with a set of hand ported 241's,252-262 cam,5000 stall th400 and a s60 rear.If i bring it for a tune can you get all the power i know it will make.Should be around 600rwhp and 575tq n/a.
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Old 01-15-2010, 09:40pm   #35
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Hey Ed,i have a 346 with a set of hand ported 241's,252-262 cam,5000 stall th400 and a s60 rear.If i bring it for a tune can you get all the power i know it will make.Should be around 600rwhp and 575tq n/a.
Ed will probably get 700HP out of it. Give him a shout Monday.
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Old 01-17-2010, 07:40am   #36
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Hey Ed,i have a 346 with a set of hand ported 241's,252-262 cam,5000 stall th400 and a s60 rear.If i bring it for a tune can you get all the power i know it will make.Should be around 600rwhp and 575tq n/a.
Uh, please stop spamming the site, or I'll get the Admin to ban you.....
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Old 01-17-2010, 07:42am   #37
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Ed will probably get 700HP out of it. Give him a shout Monday.
I could get 700 rwhp out of that set up........with a 600 shot of NAWZ!!!
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Old 01-17-2010, 09:30am   #38
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I could get 700 rwhp out of that set up........with a 600 shot of NAWZ!!!
Don't do it Ed, you'll blow the floorpan off!
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Old 01-17-2010, 11:03am   #39
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I could get 700 rwhp out of that set up........with a 600 shot of NAWZ!!!
Is that going to be one big shot, or two stages?
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Old 08-26-2010, 10:20pm   #40
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When you tune a car that doesn't already have a wideband do you just stick a sensor up the tailpipe or do you replace one of the existing O2 sensors while you tune?

Also, I want to install a wideband on my coupe but am a little confused on where to mount it. Some people say in the X pipe which sounds good to me but the manufacturer and a lot of other people say it needs to go before the cat (I have LG hi-flo cats). If I put it before the cat I worry that it will only be reading one bank. What should I do?

I'm putting the wideband in because I am adding a nitrous kit to the car if that matters.

Thanks
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