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 Loaded DHP 1.5 BIN

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TonySmooth89
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PostSubject: Re: Loaded DHP 1.5 BIN   Sun Jun 15, 2008 2:07 am

I'm very impressed with how it runs now. The shift tables are much improved over stock and the car doesn't seem to bog down anymore , which i assume was due to torque management. I'm still not sure what exactly to do with the timing tables , since i'm running with no knock right now i'd like to increase the timing a bit.
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dreww
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PostSubject: Re: Loaded DHP 1.5 BIN   Mon Jun 16, 2008 8:10 am

TonySmooth89 wrote:
I'm very impressed with how it runs now. The shift tables are much improved over stock and the car doesn't seem to bog down anymore , which i assume was due to torque management. I'm still not sure what exactly to do with the timing tables , since i'm running with no knock right now i'd like to increase the timing a bit.
if you figure it out, let me know. I think the key is to bump up the cruising timing to help gas mileage and maybe not bump up the WOT timing because timing drops to low (single digit) numbers during WOT/high RPM's. So bumping the number up 1* is like bumping timing 10-20%!
Bumping it one number on the cruising timing would not be as drastic an effect.

I put the GTP 05' timing table in (which works for some riv owners), but its was a hot timing table. Saw KR go from 0* to 9*! That wasnt even at WOT.
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PostSubject: Re: Loaded DHP 1.5 BIN   Mon Jun 16, 2008 8:36 am

You are seeing single digits for your WOT timing? Mine is somewhere around 15 and I don't have KR until I put in my 3.2 pulley. Working on that issue, but still you should have higher timing at WOT.
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oldsman105
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PostSubject: Re: Loaded DHP 1.5 BIN   Mon Jun 16, 2008 9:10 am

If you are seeing single digit WOT timing with the pulley you have, you are running to small of a pulley. Your car would be faster with a 3.4 pulley and full stock timing ( 15* at WOT). You have no Knock because the PCM has pulled that much timing.
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TonySmooth89
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PostSubject: Re: Loaded DHP 1.5 BIN   Mon Jun 16, 2008 11:33 am

So can someone send me the 05 gtp timing tables? Thanks.
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 1:19 am

Looking at my last scan, I see up to 13* WOT.
I had a little KR in that run (not when hitting 13* timing) but I may have been a tad too rich (LTFT locked in at -3.906)

would adding a ported SC increase or decrease fuel demand? I noticed my Injector PW's went from 19-20 to 17and my boost from 12-13 to 10).
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AA
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 8:33 am

Holy hell, that's a lot of knock! I've never seen a case (on my car) where being too rich made KR increase. Too much fuel helps cool the combustion, lowering knock levels, but the improper A/F (below 10:1) ratio results in less power.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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TonySmooth89
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 8:35 am

AA wrote:
Holy hell, that's a lot of knock! I've never seen a case (on my car) where being too rich made KR increase. Too much fuel helps cool the combustion, lowering knock levels, but the improper A/F (below 10:1) ratio results in less power.

I think he was referring to his timing advance , not kr when he mentioned getting 13* , as he said earlier he saw single digit timing at WOT.
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dreww
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 8:58 am

AA wrote:
Holy hell, that's a lot of knock! I've never seen a case (on my car) where being too rich made KR increase. Too much fuel helps cool the combustion, lowering knock levels, but the improper A/F (below 10:1) ratio results in less power.

no, KR maxed at 4, but always seems to do it right after a shift. A/F stayed around 11.1 I think.

I think I need to buy that dynamat for my knock sensors. I think they might be picked up way too much vibration shock after each shift. IMO, I shouldnt be seeing ANY knock. No matter how many mods I do, I STILL have it. Leads me to believe its the sensors now.
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AA
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 10:21 am

I don't think it's the sensors. Mine does the same after each shift, always has. When you are in the high RPMs, there is more power because the engine runs faster, but less load on the engine. As soon as you shift, there is a sharp load put on the engine as it switches to lower RPM. This is when you are most likely to see KR. Also likely to see KR in the very high RPM, when boost is peaking and things are hot.

I used to think it was the shock of the transmission that caused the KR spike after shifting. After playing around with some low octane gas and a 3.3" pulley, it was clear to me that the knock occurred anyway, whether shifting hard or soft. Running 89 octane, I would get 1-2 KR right after the shift to 2nd gear, and then again in 3rd gear, even with 15% throttle, and even though the shift was so slow and soft I could barely feel it.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
dreww
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 8:09 pm

AA wrote:
I don't think it's the sensors. Mine does the same after each shift, always has. When you are in the high RPMs, there is more power because the engine runs faster, but less load on the engine. As soon as you shift, there is a sharp load put on the engine as it switches to lower RPM. This is when you are most likely to see KR. Also likely to see KR in the very high RPM, when boost is peaking and things are hot.

I used to think it was the shock of the transmission that caused the KR spike after shifting. After playing around with some low octane gas and a 3.3" pulley, it was clear to me that the knock occurred anyway, whether shifting hard or soft. Running 89 octane, I would get 1-2 KR right after the shift to 2nd gear, and then again in 3rd gear, even with 15% throttle, and even though the shift was so slow and soft I could barely feel it.
I saw about 4* KR in the scan, but it was right after the shift from 2nd to 3rd.
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AA
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PostSubject: Re: Loaded DHP 1.5 BIN   Tue Jun 17, 2008 8:26 pm

That's exactly where I see most of my KR. There's just so much drag at that speed, the engine is really working to accelerate using that gear ratio. I've been able to tune most of it out in my case, but hard to get it all.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
dreww
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PostSubject: Re: Loaded DHP 1.5 BIN   Wed Jun 18, 2008 9:56 am

how did you tune it out ( the best you could)?
What exactly do you mess with on the tuner? Fuel trims? PE?
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AA
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PostSubject: Re: Loaded DHP 1.5 BIN   Wed Jun 18, 2008 1:32 pm

I used MAF table to tune fuel delivery. Watch LTFT vs. MAFF at idle & cruise, then O2 vs MAFF at WOT.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
 
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