- Joined
- Sep 12, 2023
- Messages
- 1,457
- Location
- North Ridgeville, OH
- Vehicle Details
- 1997 Thunderbird 4.6, 1998 Mark VIII LSC
I found these dyno charts from years ago.
Johnny Langton (RIP) posted this first chart over 20 years ago.
Vehicle specs:
1997 Thunderbird, mildly modded 4.6 NPI with March underdrive pullies, exhaust work, 80mm MAF and a tune.
Red - as described
Blue - PI cams installed
Vehicle specs:
1998 Town Car, 78K miles, factory 4.6 Non-PI engine, factory Premium fuel calibration, factory dual exhaust*
Green – Stock base dyno run
Red – Stock with our 93 octane programming
Blue – PI intake, factory style 80mm MAF, our 93 octane programming
* The Town Car has different spark tables than the MN12 so numbers will vary (mainly, one should NOT expect 25 HP from a tune on a stock combo) but this should be a fairly close representation of general expectations for these mods.
Johnny Langton (RIP) posted this first chart over 20 years ago.
Vehicle specs:
1997 Thunderbird, mildly modded 4.6 NPI with March underdrive pullies, exhaust work, 80mm MAF and a tune.
Red - as described
Blue - PI cams installed
Vehicle specs:
1998 Town Car, 78K miles, factory 4.6 Non-PI engine, factory Premium fuel calibration, factory dual exhaust*
Green – Stock base dyno run
Red – Stock with our 93 octane programming
Blue – PI intake, factory style 80mm MAF, our 93 octane programming
* The Town Car has different spark tables than the MN12 so numbers will vary (mainly, one should NOT expect 25 HP from a tune on a stock combo) but this should be a fairly close representation of general expectations for these mods.
