PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Whats wrong with my tune?

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Old Oct 26, 2019 | 09:31 PM
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Default Whats wrong with my tune?

I have a thread in drag racing results, but I feel ill get more insight here.
The car made 370 to the tire on a mustang dyno, but it only ran 12.29@109.5..full weight t-top car.. My stock 02 6 speed (full weight t-top car) ran 13.20@almost 108
the parts I KNOW that it has for a fact are a yank pt4000. 3.73 gears, Ls6 intake, 853 heads and OBX 1 7/8 stainless long tubes
the variables are as follows. I have receipts from the previous owner for an MS4 cam kit, and cnc porting on the heads.

ive included my cold start and tune file.
im not sure whats going on, but Im down mph.

Any help will be greatly appreciated

*edit* heres my thread with slips, and videos
https://ls1tech.com/forums/drag-raci...sslooowww.html
Attached Files
File Type: hpl
cold start.hpl (215.2 KB, 50 views)
File Type: hpt
baseline.hpt (229.2 KB, 48 views)

Last edited by Fah Cue; Oct 26, 2019 at 09:56 PM. Reason: added link
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Old Oct 27, 2019 | 01:12 AM
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It looks like your previous owner did cam and heads with possibly no tune. This is a recipe for going slower and having shitty driveability.
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Old Oct 27, 2019 | 04:21 AM
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I'd help but my HP tuner isn't opening the file. It says unsupported or newer version detected. ? .. I'm using version 4.2.12
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Old Oct 27, 2019 | 06:57 AM
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Originally Posted by gametech
It looks like your previous owner did cam and heads with possibly no tune. This is a recipe for going slower and having shitty driveability.
When I bought the car he said it was "tuned". It started and drove. I took it to a local tuner and he got another 20hp by the tune. It does actually drive good.
I haven't talked to anyone who says my combo is where it should be.

Originally Posted by Launch
I'd help but my HP tuner isn't opening the file. It says unsupported or newer version detected. ? .. I'm using version 4.2.12
I just got mine a couple weeks ago, so id imagine id have the newest version. im sure you could update yours from the hptuners website
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Old Oct 30, 2019 | 07:15 PM
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Do you know what the fuel setup is? Injectors, for, fuel pressure?
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Old Nov 1, 2019 | 04:12 AM
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Originally Posted by rpturbo
Do you know what the fuel setup is? Injectors, for, fuel pressure?
Air and fuel metering is factory.
I'll add that channel to my log files. When it was time my guy said fp was good, but I'll check it out.
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Old Nov 1, 2019 | 05:56 AM
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do you have a wideband as well? if not, might be a god idea to invest in one. also what track do you go to? FWIW, my brothers 01 T/A with MS4 and bolt-ons with 3.73s and 4k stall full weight before heads was running hi 11s at around 118-120 at 500-800' above sea level at cecil county dragway.
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Old Nov 1, 2019 | 07:48 AM
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Take off the intake manifold and check the ports in the heads to make sure they are CNC heads.
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Old Nov 2, 2019 | 03:24 PM
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Originally Posted by JoeNova
Take off the intake manifold and check the ports in the heads to make sure they are CNC heads.



Went to Milan today, but they cancelled no e/t and test and tune this weekend so I decided to pull the intake.
I'm no expert lol, but these don't look ported at all, let alone CNC'd
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Old Nov 2, 2019 | 03:42 PM
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I got a couple chances to make some hits on the way home.
Attached Files
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rollinghit.hpl (118.7 KB, 38 views)
File Type: hpl
stophit1stgear.hpl (14.1 KB, 26 views)
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Old Nov 2, 2019 | 03:44 PM
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Originally Posted by fst100
do you have a wideband as well? if not, might be a god idea to invest in one. also what track do you go to? FWIW, my brothers 01 T/A with MS4 and bolt-ons with 3.73s and 4k stall full weight before heads was running hi 11s at around 118-120 at 500-800' above sea level at cecil county dragway.

Not yet, but its on my list. My local track is milan (SE Michigan). He was running 118 BEFORE heads?
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