Torn on Engine MGT
Torn on Engine MGT Help! I just sold the DFI and decided against BS3 for now.. I want to use the stock PCM if it'll cut it. I have not been following it much over the last few years at all... So I am aware of HP Tuners and EFI Live... And I like what I hear about the road runner for EFI.
That said I have some basic questions, and its in this forum because it pertains to FI.
What Bar can the stock pcm and the accompanying software handle? Do I still need the 2 or 3 bar map witht his software.. I assume so..and I want 3 bar, so I assume the 89 Turbo TA map is still a good choice, or are there better ones now? See its been years since I care about engine mgt.
Im not using a MAF so itll be a SD tune. I think I'll be good for HP in the 800+ when at higher boost, and therfor was going to use a versa fueler and some 96lb'ers. Rather than push the 60's at real high pressure...are the motron 60's read 60 at 43.5?
I'd appreciate any input anyone has.
That said I have some basic questions, and its in this forum because it pertains to FI.
What Bar can the stock pcm and the accompanying software handle? Do I still need the 2 or 3 bar map witht his software.. I assume so..and I want 3 bar, so I assume the 89 Turbo TA map is still a good choice, or are there better ones now? See its been years since I care about engine mgt.
Im not using a MAF so itll be a SD tune. I think I'll be good for HP in the 800+ when at higher boost, and therfor was going to use a versa fueler and some 96lb'ers. Rather than push the 60's at real high pressure...are the motron 60's read 60 at 43.5?
I'd appreciate any input anyone has.
Last edited by Jammer; Dec 3, 2006 at 01:33 AM.
Originally Posted by KissMySSo1
stock computer and DFI is garbage compared to BS3
Saying that doesnt really give any real reason "why".... What about the stock pcm SPECIFICALLY is the limiting problem with a 3bar setup on the stock PCM?
FormerVendor
Joined: Mar 2006
Posts: 1,540
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From: Hell AFB
The stock pcm can be used for 2/3bar relatively easy. However, the main draw back is that the resolution is still the same on the tables. This will just make you have to tune more precise. No matter if you do a 2 or 3 bar tune, it will all go in the same space, so if you do a 2bar you get more cells to dial in that boost then with a 3bar.
Originally Posted by Jake@EPP
The stock pcm can be used for 2/3bar relatively easy. However, the main draw back is that the resolution is still the same on the tables. This will just make you have to tune more precise. No matter if you do a 2 or 3 bar tune, it will all go in the same space, so if you do a 2bar you get more cells to dial in that boost then with a 3bar.
KissmySS, thanks for the input, I suppose that statement is good for a whole different thread though. I wasnt putting anything down, just that, if I could, I'd prefer the stock PCM for this grocery getter.
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Originally Posted by Jake@EPP
The stock pcm can be used for 2/3bar relatively easy. However, the main draw back is that the resolution is still the same on the tables. This will just make you have to tune more precise. No matter if you do a 2 or 3 bar tune, it will all go in the same space, so if you do a 2bar you get more cells to dial in that boost then with a 3bar.
this is not true with the HPT 2 or 3 bar OS, they retain full resolution.
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Originally Posted by 427
The factory ecu has shorcomings if you want to race the car in competition. For dyno use or single fast passes at the track the factory stuff should be fine.
Kurt
Kurt
and yes HPT 2/3 bar extend the resoultion having more cells.
Just to add a bit here...99% of hptuners custom operating systems whether it be 1/2/3 bar Speed density or 1 bar maf come with Real Time Tuning at no extra charge.
I dont know why the factory computer wouldnt be good enough for anything. Ive been running my 1000hp+ camaro on efilive software with thier cos3 for 2 years just fine with a 3 bar and 22lbs of boost. it flatlines at 11.7 any time in boost for any lb it makes, and 0 knock per pound.
Well if you want a 2 step and Low-Z injector driver built in you have little choice, after a while you start having boxes all over the place and I didnt like it.
Only thing I dont like about the BS3 is I didnt put one in two years ago. Its kind of hard to beat real time wideband O2 correction at WOT no matter what. I run this every weekend and bracket race it quite a bit, I dont have to worry if my fuel pressure fluctuates, voltage fluctuates, temp fluctuates etc - it is amazingly consistant. I set it at 12:1 a/f and it will stay there even if it blows a pipe off the blower.
For an every day car or street strip car there is nothing the stock PCM cant do, LS1s are blessed with a great stock ignition and PCM and some excellent software and custom operating systems. Its not about how much power you can make to me really, I made the same power with a stock OS 98 PCM, its about how consistant the car runs under a lot of different conditions. I dont have the time to mess around with the custom operating system of the month or drive the car around and figure out VE tables, the BS3 is about as set and forget it as you can get if you have a basic understanding of how fuel injection and engines work.
Its not for everyone though and I'd be the last guy to tell anyone to run out and buy one if your stock PCM is up to the task. The guys that buy them are usually the guys that need them and thats about it
Only thing I dont like about the BS3 is I didnt put one in two years ago. Its kind of hard to beat real time wideband O2 correction at WOT no matter what. I run this every weekend and bracket race it quite a bit, I dont have to worry if my fuel pressure fluctuates, voltage fluctuates, temp fluctuates etc - it is amazingly consistant. I set it at 12:1 a/f and it will stay there even if it blows a pipe off the blower.
For an every day car or street strip car there is nothing the stock PCM cant do, LS1s are blessed with a great stock ignition and PCM and some excellent software and custom operating systems. Its not about how much power you can make to me really, I made the same power with a stock OS 98 PCM, its about how consistant the car runs under a lot of different conditions. I dont have the time to mess around with the custom operating system of the month or drive the car around and figure out VE tables, the BS3 is about as set and forget it as you can get if you have a basic understanding of how fuel injection and engines work.
Its not for everyone though and I'd be the last guy to tell anyone to run out and buy one if your stock PCM is up to the task. The guys that buy them are usually the guys that need them and thats about it
I never got to play around wit my BS3 setup before I sold it during my 98 Z28 part out. Does it have the 3D VE tables like the DFI/FAST/HPT/EFI software? The 3D maps help me make sense of alot of my tuning, especially locating dipe and spike in the fuel tables. I am really considering taking the plunge to the BS3 to get the WB O2 correction.
Originally Posted by wickedred
Well I took another look at the BS3 site and answered my own question. The 3D maps are there. Looks like I will be spending more money real soon. Merry X-Mas to me.
well... maybe i should try to search it ...
Originally Posted by Mrbowtie26
May be a stupid question but what is a BS3 system ? i've heard of efi, ls1 edit, hptuners, but not sure wahat BS3 is lol
well... maybe i should try to search it ...
well... maybe i should try to search it ...
Nvm i found it
KP explains some of the things that help a racecar. I also like the speed of changes. The adjustable fuel/timing axis is helpful. The ability to run over 30psi. The timing tables-launch timing-boost control timing controlled with timers (3). Individual cylinder timing/fuel control. Injector timing/firing adjustment. It can be a helpful tool when running in competition and trying to extract every little bit, then trying to get down a slick track on some weekends and good tracks on others.
Kurt
Kurt
Originally Posted by smokinHawk
care to explain why?
and yes HPT 2/3 bar extend the resoultion having more cells.
and yes HPT 2/3 bar extend the resoultion having more cells.
Originally Posted by 2002_Z28_Six_Speed
Can anyone post or PM me a link to this BS3 with specs on this little guy?
Try that