So when someone has a mechanical or nitrous problem...can you imagine if speedinc or nitrous outlet said...yeah I know whats wrong, you're not doing it right, you can bring it to our shop and we can fix it, when it would take them 2 minutes to type out what "they felt" needed to be changed. How big of dicks would those shops look like. Because I know damn well if I needed help on this problem and Frost knows how to fix it but basically said tuff titty...I would not being paying for his services any time soon.

Im guessing Frost paid for every bit of information he has ever gotten from ls1tech?

Im all for making money, but pcm secrecy is just plain dumb in 2010.

 

http://www.hptuners.com/forum/showth...highlight=swap


Should help you out....Im sure it will put hp tuners out of business too.

 

I have swapped my 98 for a 99+ PCM. I'm using the 12212156 OS. Keep in mind I used the stock 98 engine harness and just repinned it at the PCM. I imagine you should be okay though. If you are certain the fuel segment from the van is in the HPT file correctly, here are the values I have for my Fuel System. I use EFILive so I was able to do this myself with the help from the EFILive forums. I wish my tune file would work with HPTuners for you, but hopefully this data will help somewhat. My gauge works fine with these values:

Fuel System Parameters:



{F0501} Fuel Gauge Calibration:



{F0507} Convert Primary Sender To Volume

A/D Value (Gallons)
0 0.000000
2 0.000000
4 0.000000
6 0.000000
8 0.000000
10 0.000000
12 0.000000
14 0.000000
16 0.000000
18 0.000000
20 0.000000
22 0.000000
24 0.000000
26 0.000000
28 0.000000
30 0.000000
32 0.000000
34 0.000000
36 0.000000
38 0.000000
40 0.000000
42 0.264172
44 0.540727
46 0.817282
48 1.097965
50 1.213540
52 1.345626
54 1.452946
56 1.585032
58 1.717118
60 1.849204
62 1.981290
64 2.100993
66 2.418825
68 2.691252
70 2.773806
72 2.905892
74 3.198958
76 3.434236
78 3.686025
80 3.962580
82 4.251518
84 4.548712
86 4.887182
88 5.217397
90 5.547612
92 5.997530
94 6.447448
96 6.893238
98 7.264730
100 7.648605
102 8.189332
104 8.742442
106 9.246020
108 9.667044
110 10.100451
112 10.752626
114 11.095224
116 11.598802
118 12.205572
120 12.944428
122 13.472772
124 14.025882
126 14.422140
128 14.818398
130 15.796660
132 15.850320
134 15.850320
136 15.850320
138 15.850320
140 15.850320
142 15.850320
144 15.850320
146 15.850320
148 15.850320
150 15.850320
152 15.850320
154 15.850320
156 15.850320
158 15.850320
160 15.850320
162 15.850320
164 15.850320
166 15.850320
168 15.850320
170 15.850320
172 15.850320
174 15.850320
176 15.850320
178 15.850320
180 15.850320
182 24.303824
184 24.303824
186 24.303824
188 24.303824
190 24.303824
192 24.303824
194 24.303824
196 24.303824
198 24.303824
200 24.303824
202 24.303824
204 24.303824
206 24.303824
208 24.303824
210 24.303824
212 24.303824
214 24.303824
216 24.303824
218 24.303824
220 24.303824
222 24.303824
224 24.303824
226 24.303824
228 24.303824
230 24.303824
232 24.303824
234 24.303824
236 24.303824
238 24.303824
240 24.303824
242 24.303824
244 24.303824
246 24.303824
248 24.303824
250 24.303824
252 24.303824
254 24.303824
256 24.303824

{F0509} Convert Secondary Sender To Volume

A/D Value
0 0
2 0
4 0
6 0
8 0
10 0
12 0
14 0
16 0
18 0
20 0
22 0
24 0
26 0
28 0
30 0
32 0
34 0
36 0
38 0
40 0
42 0
44 0
46 0
48 0
50 0
52 0
54 0
56 0
58 0
60 0
62 0
64 0
66 0
68 0
70 0
72 0
74 0
76 0
78 0
80 0
82 0
84 0
86 0
88 0
90 0
92 0
94 0
96 0
98 0
100 0
102 0
104 0
106 0
108 0
110 0
112 0
114 0
116 0
118 0
120 0
122 0
124 0
126 0
128 0
130 0
132 0
134 0
136 0
138 0
140 0
142 0
144 0
146 0
148 0
150 0
152 0
154 0
156 0
158 0
160 0
162 0
164 0
166 0
168 0
170 0
172 0
174 0
176 0
178 0
180 0
182 0
184 0
186 0
188 0
190 0
192 0
194 0
196 0
198 0
200 0
202 0
204 0
206 0
208 0
210 0
212 0
214 0
216 0
218 0
220 0
222 0
224 0
226 0
228 0
230 0
232 0
234 0
236 0
238 0
240 0
242 0
244 0
246 0
248 0
250 0
252 0
254 0
256 0

Let me know if this helps. Good luck.

 

Very Very nice guys! Once I get this all into the PCM, I will make sure that we post up a htp and bin file so that both systems can use it. If anyone has TunerCats in the Cleveland area and wants to scan the pcm, we can do that too.

I think it makes more sence to acutally use my 98 harness and just repin it. Well if anyone needs a 99+ Auto engine harness I got one!

 

Well the wiring is all done, the new pcm is all setup and installed. Gas Gauge works perfectly. I will have a new bin file that I will post up that has the proper config in it. This swap was about as hard as a intake swap. It takes time to do dont get me wrong but I do think its well worth it. For those who say it doesnt it does, the car idels better, comes down off RPM much better, it reads all the data much faster. I still have work to do on the tune but Im very very happy with the result.
For those who helped I thank you very much. more info and pics to follow.

 

I will be starting my swap this weekend, what did it take to get the gauge working correctly? Whats the best way to remove pins btw?

 

You need to do the fuel segment swap and tweak the table for the gauge
To remove the pins, you need to remove the colored plactic covers from the front of the connectors and lift the little retaining tab holding each of the pins in and pull them out of the back of the connector

 

It was simple as pie.
I have a GREAT guy that can send you a 2002 PCM with the proper OS with the Fuel Segment that will work with 99% of the 98 fuel systems. Here is the file that you will need if you have HPT or EFI. it will cost you 4 HP tuner credits to use, or 2 with EFI live. You will need to change the capacity from 16 to 15.50
To get the red and blue covers off just use a safety pin and push in the release guides pull off. then lift up the plastic retainers one by one.
BUT FIRST CLEARLY LABEL ALL OF YOUR WIRES! I used a P-Touch and it came in handy to clearly see all the lables.
This file WILL work for a large majority of the 98 to 2002 swaps, i know because this is what is in mine! and its working awsome!

 

I have a '98 Trans Am A4/3.23's that I want to convert to a '02 Trans Am A4/3.23's PCM/OS. The engine wiring harness on the '98 is burnt from the O2 sensors because the O2 extensions were installed backwards.
Can I just use a '99+up engine harness instead of a new '98 engine harness?
Will the interior harness have to be repined or swapped out if I use a '99+up harness?

Any help is appreciated.

 

bigboy, so this is 12212156 OS, A4 (60 or 80?), with fuel segment that is working on 98' cars with later PCM?

 

the 12212156 OS is a 2002 os, it can be either stick or auto. The normal auto is the 60, HP can swap the segment for you to enable it to control a 80.

 

Thanks for posting the file, I will check it when I have my car running

 

2 Efi live vin credits or controller credits? V1 has credits for each controller, engine/tranny, v2 does one credit per vin number. I ask because your 98 PCM doesn't cost a credit to tune so I was slightly confused...

 

for efi live Unlimited tuning licenses for the LS1A 97-98 GEN III PCM is free with any FlashScan V2 purchase.
If you use the posted HP tuners file for a 0411 pcm, it will cost you 4 HP tuners credits. 2 to license the PCM you have then 2 more to flash in the file posted.

What we are doing here is taking the 98 pcm out of the car, re-pinning the 2 pcm connectors (red and Blue) to the 99+ fbody pcm pinout. THen taking a 2002 (0411) pcm and puting in a fuel segment fix so that the 98 fuel gauge will read properly with the newer pcm.


If you have a 2002 (0411) fbody pcm you can do a full read and send the file to HP tuners support and they can put the fuel fix in for you as well.

 

Do I have to sacrifice low oil level light when swapping 98' PCM to later one?

 

on the cluster yes, but you can easly wire it into a external light.

 

Ok, I have a 98 that ive been considering doing the swap to. The car will be a stroker, n20, full suspension drag car thats stripped down for weight and running a th400. What all would I gain from this swap? Is any 99-02 computer better than another?

 

Does it go directly to cluster, or to the PCM and then PCM sets on light on the cluster?