tuning gains

Rob@Altered · 12-03-2009, 09:16 AM

We've tuned the entire range of possible sets ups. We've done cars that were bone stock, mild bolt ons, all bolt ons, to twin turbo set ups, and we've seen gains that were beyond our best expectations.

Another thing to take into account is that Cobb is always coming out with new tuning programs which give the us more and more control over all the different aspects of the car. This gives us the ability to see better gains as time goes on.

1slow370 · 12-04-2009, 05:00 AM

I just wan't to throw something out there... Just connecting some dots here and what i'm seeing is 500+ hp turbo kits on an 11 to 1 compression ratio engine, with nothing but fuel tunes as the timing does its own thing right now for both cobb and uprev... does that sound right?

Clint@Altered · 12-07-2009, 05:05 PM

Quote:

Originally Posted by 1slow370

I just wan't to throw something out there... Just connecting some dots here and what i'm seeing is 500+ hp turbo kits on an 11 to 1 compression ratio engine, with nothing but fuel tunes as the timing does its own thing right now for both cobb and uprev... does that sound right?

Quote:

Originally Posted by Nixlimited

If I am reading all of this correctly, you guys aren't able to tune timing tables yet, right? How safe is a N/A car that has been converted to FI without adjusted timing? I saw that your kit got good numbers, but that just seems to be a really sub-optimal set-up. On my old Suby, timing was what we spent the most time tuning.

I've seen this question thrown around a lot lately. From the post I made in the 370ZTT Thread:

We had great success working with the COBB AP (and COBB directly) with this 370ZTT. With the MAFS, the car drives flawlessly. The cobb software can drop the timing curve, but the ECU has a lot of logic that modifies the curve to be what is optimal for the car at any give time.
So timing changes must be well matched - say if the curve that you've put in is too aggressive, at points the ECU may adjust. We tested the COBB AP extensively with the 370Ztt and experienced no knock, no limp modes, no codes (HFCs work wonders) and the car simply runs perfect (and moves out!)

I am not sure about the G37 however as it is different and we have not yet (but soon) tuned a twin turbo g37 with the COBB. The only way we could control the G37 required hard-wiring f-cons in the past.

Nixlimited · 12-07-2009, 09:32 PM

Quote:

Originally Posted by Clint@Altered

I've seen this question thrown around a lot lately. From the post I made in the 370ZTT Thread:

We had great success working with the COBB AP (and COBB directly) with this 370ZTT. With the MAFS, the car drives flawlessly. The cobb software can drop the timing curve, but the ECU has a lot of logic that modifies the curve to be what is optimal for the car at any give time.
So timing changes must be well matched - say if the curve that you've put in is too aggressive, at points the ECU may adjust. We tested the COBB AP extensively with the 370Ztt and experienced no knock, no limp modes, no codes (HFCs work wonders) and the car simply runs perfect (and moves out!)

I am not sure about the G37 however as it is different and we have not yet (but soon) tuned a twin turbo g37 with the COBB. The only way we could control the G37 required hard-wiring f-cons in the past.

I am not doubting your anecdotal evidence as such, and as I said, your results look great (and so does the build), but I wanted to know more along the lines of tuning principles. FI cars have significantly different timing tables than N/A, particularly in the area of boost onset. It may be that with the low boost pressures you are currently running, it's just not that critical. But, there seems to be no way to go high-boost without prospective control of the timing tables. I am sure the ECU is good at monitoring knock and pulling timing, but bottom line is that all of its logic is based on the assumption of a N/A engine. I am not willing to take a chance on an expensive engine with retrospective type adjustments. One serious detonation event at high-boost could become a very expensive mistake.

G37Sam · 12-04-2009, 05:16 AM

Quote:

Originally Posted by AAM_COMP

We've tuned the entire range of possible sets ups. We've done cars that were bone stock, mild bolt ons, all bolt ons, to twin turbo set ups, and we've seen gains that were beyond our best expectations.

Another thing to take into account is that Cobb is always coming out with new tuning programs which give the us more and more control over all the different aspects of the car. This gives us the ability to see better gains as time goes on.

Can we see dyno sheets please of the setups you're talking about (I've seen the TT one, any ones available for the other setups?)

drZ · 12-04-2009, 05:56 PM

got around 8whp with the up rev thats with all bolt on dones

Nixlimited · 12-05-2009, 02:13 PM

Quote:

Originally Posted by AAM_COMP

We've tuned the entire range of possible sets ups. We've done cars that were bone stock, mild bolt ons, all bolt ons, to twin turbo set ups, and we've seen gains that were beyond our best expectations.

Another thing to take into account is that Cobb is always coming out with new tuning programs which give the us more and more control over all the different aspects of the car. This gives us the ability to see better gains as time goes on.

If I am reading all of this correctly, you guys aren't able to tune timing tables yet, right? How safe is a N/A car that has been converted to FI without adjusted timing? I saw that your kit got good numbers, but that just seems to be a really sub-optimal set-up. On my old Suby, timing was what we spent the most time tuning.

1slow370 · 12-05-2009, 08:28 PM

Quote:

Originally Posted by Nixlimited

If I am reading all of this correctly, you guys aren't able to tune timing tables yet, right? How safe is a N/A car that has been converted to FI without adjusted timing? I saw that your kit got good numbers, but that just seems to be a really sub-optimal set-up. On my old Suby, timing was what we spent the most time tuning.

asked that already seems ludacris

12-03-2009, 09:16 AM	#1 (permalink)
Rob@Altered Enthusiast Member Join Date: Jul 2009 Location: Gaithersburg Posts: 282 Drives: 350Z/370Z/GTR/G35 Rep Power: 369	We've tuned the entire range of possible sets ups. We've done cars that were bone stock, mild bolt ons, all bolt ons, to twin turbo set ups, and we've seen gains that were beyond our best expectations. Another thing to take into account is that Cobb is always coming out with new tuning programs which give the us more and more control over all the different aspects of the car. This gives us the ability to see better gains as time goes on. __________________ Altered Atmosphere Motorsports RobS@alteredatmosphere.com

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12-04-2009, 05:00 AM	#2 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I just wan't to throw something out there... Just connecting some dots here and what i'm seeing is 500+ hp turbo kits on an 11 to 1 compression ratio engine, with nothing but fuel tunes as the timing does its own thing right now for both cobb and uprev... does that sound right?

12-04-2009, 05:56 PM	#6 (permalink)
drZ Base Member Join Date: Aug 2009 Location: Long Island Posts: 59 Drives: 370z Rep Power: 0	got around 8whp with the up rev thats with all bolt on dones