EFILive vs HPT question...
Thread Starter
Joined: May 2002
Posts: 4,440
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From: Spring Hill, KS
EFILive vs HPT question... Would I honestly be missing out on much if I went EFILive over HPTuners? I can get into EFI for the cost of a license (I was given an older cable). So, investment in HPT will be substantially higher. There’s no special requirement I need in a tuning suite. Just figured it would be a nice tool to have.
Last edited by 99Silver6.0; Sep 17, 2019 at 07:55 AM.
Joined: Nov 2003
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From: Wichita KS / Rancho San Diego
To me that's a no brainer. For the cost of a license it makes no sense to spend the money to purchase an entirely new tuning suite. For a 99 Silverado, EFILive will give you all the tuning power you need.
I did not see a 99 silverado mentioned, but if that is indeed the vehicle, be aware that that pcm/bcm combo had some glitches that are not found in any other years. I have no idea if this could affect anything the OP has planned or not.
Thread Starter
Joined: May 2002
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From: Spring Hill, KS
My old truck was a 99 Silverado but, sold it some time ago. I did fight some weird issues in that truck before I ended up putting in a newer PCM. I would be using this cable on my 99 Camaro though. I have some seat time with EFI Live but havent ever used HPT so just wanted to get some input. Appreciate it guys! Gonna go ahead and buy an EFI Live license.
Last edited by 99Silver6.0; Sep 17, 2019 at 10:41 AM.
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My old truck was a 99 Silverado but, sold it some time ago. I did fight some weird issues in that truck before I ended up putting in a newer PCM. I would be using this cable on my 99 Camaro though. I have some seat time with EFI Live but havent ever used HPT so just wanted to get some input. Appreciate it guys! Gonna go ahead and buy an EFI Live license.
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Verdad Gallardo Thread Starter
Joined: May 2002
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From: Spring Hill, KS
Thread Starter
Joined: May 2002
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From: Spring Hill, KS
On The Tree
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From: Iowa
Efi live for the ls1 pcm is superior in my opinion. The ability to flash different operating systems once the controller is licensed is great for making everything I tune flex capable. I have both and use both on a regular basis just prefer efi for gm stuff
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The thing that makes EFI especially interesting to me is that they have a custom OS that gives you a fuel table with RPM and MAP axes. Whereas GM used one with ECT and MAP, and then added PE on top of it... which just seems really hacky. RPM and MAP (or RPM and load) makes a lot more sense to me, and there's no need for PE with that approach.
The thing that makes EFI especially interesting to me is that they have a custom OS that gives you a fuel table with RPM and MAP axes. Whereas GM used one with ECT and MAP, and then added PE on top of it... which just seems really hacky. RPM and MAP (or RPM and load) makes a lot more sense to me, and there's no need for PE with that approach.
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First, I should specify that I'm only familiar with the P01 and P59 PCMs, so this might not apply to others.
That said... I'm talking about the table that tells the PCM what air/fuel ratio to use. HPT calls it "Open Loop F/A" and EFI Live calls it "Commanded Fuel."
It's not the same thing as the VE table. Both affect the air/fuel mixture, but they have different meanings and serve different purposes. One should reflect the actual VE of the system - there's an objectively correct value for each cell in that table. The other should reflect what mixture the tuner wants - there's tons of room for opinion in that.
(And, yeah, sometimes you have to abuse the VE table to get the results you want...)
That said... I'm talking about the table that tells the PCM what air/fuel ratio to use. HPT calls it "Open Loop F/A" and EFI Live calls it "Commanded Fuel."
It's not the same thing as the VE table. Both affect the air/fuel mixture, but they have different meanings and serve different purposes. One should reflect the actual VE of the system - there's an objectively correct value for each cell in that table. The other should reflect what mixture the tuner wants - there's tons of room for opinion in that.
(And, yeah, sometimes you have to abuse the VE table to get the results you want...)
First, I should specify that I'm only familiar with the P01 and P59 PCMs, so this might not apply to others.
That said... I'm talking about the table that tells the PCM what air/fuel ratio to use. HPT calls it "Open Loop F/A" and EFI Live calls it "Commanded Fuel."
It's not the same thing as the VE table. Both affect the air/fuel mixture, but they have different meanings and serve different purposes. One should reflect the actual VE of the system - there's an objectively correct value for each cell in that table. The other should reflect what mixture the tuner wants - there's tons of room for opinion in that.
(And, yeah, sometimes you have to abuse the VE table to get the results you want...)
That said... I'm talking about the table that tells the PCM what air/fuel ratio to use. HPT calls it "Open Loop F/A" and EFI Live calls it "Commanded Fuel."
It's not the same thing as the VE table. Both affect the air/fuel mixture, but they have different meanings and serve different purposes. One should reflect the actual VE of the system - there's an objectively correct value for each cell in that table. The other should reflect what mixture the tuner wants - there's tons of room for opinion in that.
(And, yeah, sometimes you have to abuse the VE table to get the results you want...)
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From: So.Cal.
If you need help with anything related to EFILive, let me know, I'll point you to a bunch if info.
Thread Starter
Joined: May 2002
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From: Spring Hill, KS