DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
AMEN!!!
It's hilarious how many hombres in the valley now call themselves tuners just because they have the software and a HPT sticker lol. I didn't feel comfortable charging anyone ANYTHING until I learned a LOT tuning my own vehicles. After doing this crap for about 5 years now it's funny looking back...
, I'd love to see the color of the headers...
'20 AT4
'01 Suburban 2500 Dad Wagon
That's not exactly the bestest way to do that either. If you knock 7 degrees out of the entire table, you end up with the 7 degree decrease in the low load cruise areas too, which can effect mileage. I usually follow the OE pattern of reducing the spark only in the higher airflow higher load areas. Leaving the low load areas alone makes sure you still get some decent mileage out of it if it ends up running off the LO table.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
'20 AT4
'01 Suburban 2500 Dad Wagon
This is a valid point. But then again, most of the things that come out of my shop aren't exactly fuel sipping, mpg whores to begin with. They're more like ultra-violent street machines.
Although this Kenne Bell Silverado I built sees the occassional towing of about 1000 pounds so it might be useful to adjust the High and Low spark tables accordingly
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
We've seen lots of VERY QUESTIONABLE tunes over the last couple of years. Just because the tune was done by a big name shop does not mean it is a high quality.
When I tuned my car, I set the high and low octane tables to the same so I know what timing is being used. After I've completed the dyno tune, I'll adjust the low octane table so it does what it is suppose to do. The factory high and low octane tables are the same at .30 gr/cylinder and less. At .30 gr/cylinder and above, it subtracts 1 degree per line until its -10 degrees. For a street car, I may only cut it by 7 degrees. In any case, if the car is tuned right, it should not knock period, so why eliminate a feature that protects the engine from damage especially with FI?
For my 2005 Corvette, I desensitize the knock sensors about 10% to eliminate low load random cruise KR.
A shop I visit regularly sees cars all the time where the tunes were unquestionably horrible. Some of the tuning vendors on another popular forum did not like it when I posted a thread that detailed some of the common hacks. I never posted any of the tuner names, but I heard they did not like it.
2014 Corvette, Z51, 3LT, 7-Speed, NPP, 2 tops, Exposed Carbon Fiber roof, FAY, Laguna Blue, Kalahari, Museum Delivery.
So, if a bone stock, untuned car has some KR, it's not tuned right?
There are some that believe desensitizing knock sensors is "hack" tuning. The OE calibrators who setup the KS sensitivity know far more than either you or I.
I remember that thread. Some were valid points, others, not so much. This is one of the problems a lot of guys who have tuned a few cars have. They think that their way is the only way, or that certain things should only be done a certain way. Same as your comment about KR. That there should be "none period". While I do agree KR isn't really a good thing, perfectly stock cars have some KR, and there must be a reason. To completely eliminate it in a bone stock car, you either have to diminish the timing to the point of reducing the power, or you have to desensitize the knock sensors, which without some way of knowing if it IS actually knocking, really shouldn't be done.
PE "raping" is another one. The GM PE tables look "raped". Does that mean the OE calibrators are "hacks"?
Smoothing is another one. I see guys all the time complain that a timing table looks "hacked" because it's not ski slope smooth. Well, neither are the OE tables. Does that mean the OE calibrators are "hacks".
In other vehicles, doing something like changing the MAF transfer (a common practice in many forms of tuning) is a HUGE NONO! But we do it all the time on the GMs. Does this make everyone who scales a MAF a hack?
I'm ok with knowing there's many different ways to do something, and that many different people will have many different ways of doing the same thing. I DO believe that a good tune or calibration should accurately model airflow, both VE AND MAF, and fuel delivery, and that it (the tune) should be as minimally invasive as possible. I don't believe in turning off codes just for the sake of turning them off. I don't believe in maxing misfire tables. I don't believe in setting knock recovery so ridiculously high that it's a potential threat to the engine. But, I ALSO don't believe a little bit of knock retard is a terrible thing. If you have a little bit, it means everything is working right.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
I typically don't worry about less than 2* of knock because a) I won't feel it and b) it returns to full timing pretty quick. Unless it happens at the exact same operating condition every time, I let it fly.
DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
Is it just me or does this thread piss everyone off just a little bit?
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
Especially with ma and pa gas stations selling junk 87.
Well, yes if you compare a stock 4.8 and 5.3 file and find them exactly the same with the exception of a couple random cells and PE.
Scaling a MAF or VE table is typically out of necessity due to the hard-coded airflow limits within the PCM. It'd be great if the stock controller supported 5 bar, 2048g/sec, and 5+g/cyl but it's a bit much to ask lol
Suuuuucks, I got a Superchips and HPTuners sticker way back when. Was kinda confused about the superchips one, thought maybe the guy in shipping was screwing with people throwing in random other stickers lol. I'm not too fond of the HPTuners logo, otherwise I'd actually put the sticker on something other than a beer bong or beater truck...
'20 AT4
'01 Suburban 2500 Dad Wagon
95% of the time I leave the low octane table in place to function how it should.
DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
I just got sent a tune from a big name shop to help me with my supercharged LS7. They said it was a tune from a supercharged LS7 they did. When I opened it I cried. I couldn't believe how hacked it looks.
Check it out.
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
DSX Tuning - Authorized HP Tuners Dealer
http://www.dsxtuning.com
http://www.facebook.com/dsx.tuning
Just say no to bull s***.
IF YOU WANT HELP, POST A FILE!
PM sent. I would have never bought all these parts from the company I did if I knew they basically had zero support after the sale.