PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

How to swap from 98 to 99+.. guide, sorta

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Old Jun 9, 2009 | 02:28 AM
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Default How to swap from 98 to 99+.. guide, sorta

Guys, i just completed the 98 to 99+ swap (used a 2002 ecu) took me 3 hours, and it works GREAT!! everything is SOOOOO much nicer, writing tunes is twice as fast, tuning is so much easier, omg.... i cant beleive i waited till my 98 took a **** to do this! i recommend all of you do it... PM me for more info if your serious about doing it i will walk ya through it via chat or something
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Old Jun 9, 2009 | 09:12 AM
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If you do this, can you still use your 98 HPT? Or do I have to swap over to another year locked HPT?
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Old Jun 9, 2009 | 11:20 AM
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if your using a hpp3 to tune with there is no benefit of changing the processor. you will need tuning software to get the benefit of this mod.

I did the swap and went back to stock. My flash time is the same with either, live Tuning Roadrunner

Ryan
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Old Jun 9, 2009 | 12:19 PM
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Originally Posted by slow
if your using a hpp3 to tune with there is no benefit of changing the processor. you will need tuning software to get the benefit of this mod.

I did the swap and went back to stock. My flash time is the same with either, live Tuning Roadrunner

Ryan
Agreed, that would be a terrible idea if using a handhelp hpp3, but, where do you see anything about a hpp3??
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Old Jun 9, 2009 | 12:59 PM
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whoops, I read hpt as hpp3 my mistake.

Ryan
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Old Jun 9, 2009 | 10:15 PM
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Originally Posted by DarkblueTA
If you do this, can you still use your 98 HPT? Or do I have to swap over to another year locked HPT?
sorry for the delayed responce, you have to reregister a new vcm... and no hp tuners wont give you a break on that new vcm since your switching to a new one, my suggestion would be to give it to a buddy who has a 98 but whos car isnt tuned yet and let him borrow your interface, or write it off as a loss.
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Old Jun 10, 2009 | 12:22 AM
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What is the advantage of a 99-02 computer over a 98? Processor speed only? If so, that likely would not be an issue to most people. How does a faster processor effect engine performance on the average car? I thought they went to the faster processor just to manage all of the additional EPA crap. If you have all of that EPA stuff off the car, do you need the faster processor?
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Old Jun 10, 2009 | 12:40 AM
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Originally Posted by b.d.d.
What is the advantage of a 99-02 computer over a 98? Processor speed only? If so, that likely would not be an issue to most people. How does a faster processor effect engine performance on the average car? I thought they went to the faster processor just to manage all of the additional EPA crap. If you have all of that EPA stuff off the car, do you need the faster processor?
the 99+ has support for real time tuning via hp tuners, and has many more options in it, also the timing table goes up to 1.2g/s vs 1.0 in the 98.... the 99 has so many more variables and options its just crazy lol... they went to a faster processor because i dunno... the faster processor is a huge advantage.. i switched to my 02 vcm because the 98 fried with the 2bar os on it... which i guess is common, the 99+ has no such issues as it has MANY MANY MANY checks and balances.
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Old Jun 10, 2009 | 09:26 AM
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Cool. I did notice some new options when I was experimenting between a 98 and 2002 with HP. This HP tuner gig is still new to me, so I am learning on the fly.

I know from hooking a tack up on a 98 and then on a 02 that the pinning locations of the wires are not the same. So is that what a guy has to change, the pinning location of wires on the connectors at the VCM? Will all of the 98 sensors work with a 99-02 VCM? Is there a schematic to guide you through it?
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Old Jun 11, 2009 | 01:28 AM
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there is some what of a schematic... pm me for more info....
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Old Jun 11, 2009 | 08:58 PM
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The other advantage is a single VE table.
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Old Jun 12, 2009 | 04:33 PM
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Originally Posted by brianfromhawaii
there is some what of a schematic... pm me for more info....
Post it or send it to me :-) please.
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Old Jun 12, 2009 | 04:48 PM
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pm me the info or just post it for all to see!
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Old Jun 12, 2009 | 07:21 PM
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Originally Posted by Runn
Post it or send it to me :-) please.
Pm me your specific questions, there IS NO GUIDE OR WRITEUP FOR WHAT I DID.. I have seen other guides that if i had of followed, i would have toasted something im sure!

Originally Posted by james562
pm me the info or just post it for all to see!
PM me your specific questions, im here to answer anyones questions they may have about the swap...
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Old Jun 20, 2009 | 05:59 AM
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success story pmed to me -

hey i just finish with the conversion took me 2 hours everything went great and this thing even better than 98 i switch to 02 gauge work perfecly thanks
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Old Jul 16, 2009 | 02:22 PM
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Cam you PM what all I need to do for this swap or what I need ?
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