virtual programming
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Car: Bone stock 1989 Iroc T-Top,1991 Z28
Engine: 5.7, Carbed 383
Transmission: 700r4, T-56
virtual programming
I'm Going to get into the "black Magic" of Programming. Just got a laptop and I plan on getting all the equipment necessary. I have to do this because of a new engine combo going into my 89 iroc, Putting in a 383 stroker. I have been reading all that I can in the DIY sections and all the info can be alittle intimidating, My question is,is there some type of "virtual" engine programmer that I can practice"tuning" on so that I can learn about the changes that I make and what affect it would have on an engine before I get into my own engine,make a mistake and trash a brand new engine? Thanks!
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Engine: 666 c.i.
In a word, no. The best you can do is to create a "test bench" using the ECM and it's electrical components. And then monitor the effects of various changes to the eprom.
And even then, there are some things that can only be tested on a "real engine".
And even then, there are some things that can only be tested on a "real engine".
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Car: Bone stock 1989 Iroc T-Top,1991 Z28
Engine: 5.7, Carbed 383
Transmission: 700r4, T-56
Thanks for the info. I thought it wouldn't be that easy. I'm starting to realize why everyone puts a carb on their mototrs and ditches the efi
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But, for overall driveability, fuel economy, emissions and performance throughout the rpm range, EFI wins hands down.
If you can tune a carb, you can quickly learn to tune EFI. The concepts are the same, just the method is different. The biggest problem I think people find in tuning EFI is the "tuning" part. If they haven't got a clue how to properly tune an engine, it doesn't matter if it's a carb or EFI, neither will run very well.
Last edited by Grim Reaper; 12-26-2006 at 12:22 AM.
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But, you'll see as time passes on how more and more people are switching to EFI. The NHRA, and NASCAR rules will even break into the 20th century some time.
I've been running ecm benches for almost a decade now, and IMO, there's nothing to equal them.
While some stick to a carb, it's only since they typically settle for the notion if the engine will eventually start, and sorta goes when you press on the gas they're happy. It's amazing when people talk about EFI that all they usually talk about is fueling, when that's just 1/2 the story. Timing isn't usually thought of.
Once you get to building some high HP, road FRIENDLY engines, there's no match to EFI.
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And then there is still some other things you can tune for (electric fans, torque lock-up, and if it's a newer PCM, even the transmission). And never get dirt under your finger nails.
And, best of all, (with enough testing), you can tune the engine to operate optimally in ALL elevations, air temps, barometrics - and do it repetively.
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Car: 1983 G20 Chevy
Engine: 305 TPI
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Axle/Gears: 14 bolt with 3.07 gears
While some stick to a carb, it's only since they typically settle for the notion if the engine will eventually start, and sorta goes when you press on the gas they're happy. It's amazing when people talk about EFI that all they usually talk about is fueling, when that's just 1/2 the story. Timing isn't usually thought of.
Once you get to building some high HP, road FRIENDLY engines, there's no match to EFI.
Once you get to building some high HP, road FRIENDLY engines, there's no match to EFI.
I will never go back to a carb. TBI is even light years ahead of a carb.
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Car: Bone stock 1989 Iroc T-Top,1991 Z28
Engine: 5.7, Carbed 383
Transmission: 700r4, T-56
Thanks guys for all the feedback. Like I said, all of the info I have been going through can get a little intimidating. One more question, these are the specs on the new combo that is going into the car:
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
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Car: '91 K5 Blazer, '05 Ram Daytona QC
Thanks guys for all the feedback. Like I said, all of the info I have been going through can get a little intimidating. One more question, these are the specs on the new combo that is going into the car:
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
If you haven't read the 'tuning with EBL' thread I urge you to. For a novice like me it was certainly the easiest way to go.
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
That at I idle around 11hg haha.
But otherwise, EFI rules!
Your the guy with the silver vette that was in Corvette Enthusiast magazine a few months back right?
-- Joe
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Yeah. That's my 84 Z51 running a Xfire manifold. Ran 105mph since then and I think there's still a few more mph in it. RBob's EBL is a must if you're going to run a bigger cam. Mine idles at about 46-47kPa @ 875rpm. You have the same heads I do. Is yours a 383 or a 350? That 306 cam is pretty healthy.
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Joe,
Yeah. That's my 84 Z51 running a Xfire manifold. Ran 105mph since then and I think there's still a few more mph in it. RBob's EBL is a must if you're going to run a bigger cam. Mine idles at about 46-47kPa @ 875rpm. You have the same heads I do. Is yours a 383 or a 350? That 306 cam is pretty healthy.
Yeah. That's my 84 Z51 running a Xfire manifold. Ran 105mph since then and I think there's still a few more mph in it. RBob's EBL is a must if you're going to run a bigger cam. Mine idles at about 46-47kPa @ 875rpm. You have the same heads I do. Is yours a 383 or a 350? That 306 cam is pretty healthy.
the 306 cam is great, but not with the 2.59:1 rear end.. Yours an automatic car?
-- Joe
#14
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Joe,
I Trans-planted a ZF-6 into the car 2 years ago replacing the original 4+3. I also replaced the D36 rear with a D44 running 3.45's. And EBL can be modified by RBob to run 8 port injectors.
I Trans-planted a ZF-6 into the car 2 years ago replacing the original 4+3. I also replaced the D36 rear with a D44 running 3.45's. And EBL can be modified by RBob to run 8 port injectors.
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Car: 1987 Corvette
Engine: 383 ci
Transmission: ZF 6 Speed
Axle/Gears: 4.10 Dana 44
Thanks guys for all the feedback. Like I said, all of the info I have been going through can get a little intimidating. One more question, these are the specs on the new combo that is going into the car:
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
383 forged assembly
flat tops
5.7 rods
AFR 195 Eliminators
Comp xfi 288
58mm tb
30# injectors
HSR
N/A but rings will be file fit for nos( to be added more sooner than later)
Will this setup be radically different from the stock 5.7 that's in the car now? Can I expect some real tuning issues or will it be "fairly" easy for a newbe tuner? Also kinda of a double post,what software do you guys recommend for a newbe tuner. Once again guys,thanks for all of your input.
I started tuning in April of this year and have been using TunerPro RT. It is very user friendly, easy to understand, and the customer service is second to none. Good luck!!
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
ZF-6 and D44 huh. That musta cost a fortune. I'm not spending no 2k on a Dana44. no way. Not in a million years, they are not worth that haha. The ZF6 is the ***** to drive, but i'm also not spending 2k on a transmission + all required parts. I have the 700R4 in the car now. I dunno how I feel about that. I bought a 500.00 torque converter, rebuilt the tranny and installed a transgo shift kit. I'd rather have a stick but. the 4+3 is retarded, and the ZF is too much money.
-- Joe
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Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Some people have a knack for tuning, and for others it's alot of work. I fell into the second group, I had to really struggle intially....
Lots of notes, look for trends, do more the butt dyno tesing, ie data logs, and GTech testing.
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Car: check
Engine: check
Transmission: check
The injector upgrade is to be able to run 8 PnH port injectors (or 4 TBI injectors).
Eight saturated port injectors can be run without modifying the ECM.
RBob.
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