2010 LTX Shootout Classes & Rules are Posted
01-17-2010, 10:27 AM
#121
The only advantage in power is the added RPM capability. (and for people that have had Optispark issues, no more Optispark) You should be able to spin one up to 12799 RPM. (GM says that is the highest allowed rev limiter) I have customers that shift their LSX cars well above 8000. (Takes a sort runner manifold, Hogan, etc.) Even my FAST XFI ECM made no more power with my 383" than my OBD1 LT1 PCM below did 7000. That engine likes 8000.
01-17-2010, 12:13 PM
#123
I'm sorry, but higher resolution has nothing to do with smoothness or power. For sure nothing you can feel or see on a dyno. LS1s run no smoother than the LT1s. I have one daily driver of each. The dual knock sensor capability is in the LT1 PCMs also. A simple binary switch selects single or dual knock sensors. The B body cars use two. Nothing at all to changing an F body to dual knock sensors. Click on one switch in the switch table and add a wire and knock sensor.
The only advantage in power is the added RPM capability. (and for people that have had Optispark issues, no more Optispark) You should be able to spin one up to 12799 RPM. (GM says that is the highest allowed rev limiter) I have customers that shift their LSX cars well above 8000. (Takes a sort runner manifold, Hogan, etc.) Even my FAST XFI ECM made no more power with my 383" than my OBD1 LT1 PCM below did 7000. That engine likes 8000.
The only advantage in power is the added RPM capability. (and for people that have had Optispark issues, no more Optispark) You should be able to spin one up to 12799 RPM. (GM says that is the highest allowed rev limiter) I have customers that shift their LSX cars well above 8000. (Takes a sort runner manifold, Hogan, etc.) Even my FAST XFI ECM made no more power with my 383" than my OBD1 LT1 PCM below did 7000. That engine likes 8000.
im not trying to make this all about me, but if there is one legitimate point i can make, its that HPTuners is more DIY friendly. Again, im not going to argue any decision made im fine standing on the sidelines.
Last edited by JoeliusZ28; 01-17-2010 at 01:04 PM. Reason: completely changed my response.... i admit haha.
01-17-2010, 01:54 PM
#124
There is nothing simpler to tune than an LT1, unless it's an old TBI pickup. It comes down to your experience. As for the "resolution" with Datamaster versus Tunercat, no scan tool is going to have data frames fall on the break points in the calibration (unless by accident), which have noting to do with the tuning software. Unless of course the tuning software is wrong, it's "resolution" is going to be the same as the calibration.
Tunercat could possibly stand some dumbing down for the beginners. For an knowelable tuner, it's just fine. I have access to more parameters in OBD2 PCMs with Tunercat than anything else. I also have HPTuners and LS1 Edit. I like them all, and just like women, they have their differences. I use HPTuners for all LS2 & later vehicles. Some LS1 vehicles. Works great, their custom operating systems work very well, and support is excellent.
Well, except for Bill.
Tunercat could possibly stand some dumbing down for the beginners. For an knowelable tuner, it's just fine. I have access to more parameters in OBD2 PCMs with Tunercat than anything else. I also have HPTuners and LS1 Edit. I like them all, and just like women, they have their differences. I use HPTuners for all LS2 & later vehicles. Some LS1 vehicles. Works great, their custom operating systems work very well, and support is excellent.
Well, except for Bill.
01-17-2010, 04:12 PM
#127
There is nothing simpler to tune than an LT1, unless it's an old TBI pickup. It comes down to your experience. As for the "resolution" with Datamaster versus Tunercat, no scan tool is going to have data frames fall on the break points in the calibration (unless by accident), which have noting to do with the tuning software. Unless of course the tuning software is wrong, it's "resolution" is going to be the same as the calibration.
Tunercat could possibly stand some dumbing down for the beginners. For an knowelable tuner, it's just fine. I have access to more parameters in OBD2 PCMs with Tunercat than anything else. I also have HPTuners and LS1 Edit. I like them all, and just like women, they have their differences. I use HPTuners for all LS2 & later vehicles. Some LS1 vehicles. Works great, their custom operating systems work very well, and support is excellent.
Well, except for Bill.
Tunercat could possibly stand some dumbing down for the beginners. For an knowelable tuner, it's just fine. I have access to more parameters in OBD2 PCMs with Tunercat than anything else. I also have HPTuners and LS1 Edit. I like them all, and just like women, they have their differences. I use HPTuners for all LS2 & later vehicles. Some LS1 vehicles. Works great, their custom operating systems work very well, and support is excellent.
Well, except for Bill.
01-17-2010, 05:10 PM
#129
Joel, it's not a matter or either Datamaster (What I also use when tuning an OBD1 LT1) or Tunercat's resolution. Any scan tool displays data in "frames" in time increments begining when the log is started. Some may accidently fall on a calibration break point, most frames won't. No digital equipment displays data "real time", including digital volt/ohm meters. If Datamaster shows 34 deg advance at 4800 and 5200, you can bet it has 34 degrees at 5000, which is an LT1spark table break point. No mater what you are tuning, or what scanner or scan software you use, some data will always "fall between frames". That is just how it is. You simply have to learn how to work with it. LS1PCMs display more data frames per second than an LT1 PCM. Not a big deal either way as long as you understand what is going on.
Not a big deal, that is, unless you are tuning a turbo Buick GN with the factory ECM, a WOT blast from 2000 to 5000 RPM in 3rd gear will get you about two data frames. Fast engine, slow ECM.
Not a big deal, that is, unless you are tuning a turbo Buick GN with the factory ECM, a WOT blast from 2000 to 5000 RPM in 3rd gear will get you about two data frames. Fast engine, slow ECM.
01-18-2010, 03:01 AM
#132
Yep! Here is Mr. Speed Density himself having fun at LTX 2008
He is at the front of the hump line in the beginning. LMAO
http://www.youtube.com/watch?v=GxZl8s3x-wQ
He is at the front of the hump line in the beginning. LMAO
http://www.youtube.com/watch?v=GxZl8s3x-wQ
01-18-2010, 12:29 PM
#135
"edit" for private rentals of course.
Last edited by Racin96ss; 01-18-2010 at 02:25 PM.
01-18-2010, 06:02 PM
#139
