GOT A CLASS A 7.3L MOTORHOME?

AREAS WE ADDRESS

Fuel Control – Fuel tables are modified for either better economy or all out performance. Depending on your needs is how most tables are set up. Most RV’s that go into Open Loop use this fuel table for its fueling requirements. Most 7.3L will not step up into Open Loop (power enrichment) at WOT and from the factory are calibrated to operate in Closed Loop which restrains power levels. By correcting this power enrichment function alone can increase power and toque from your 7.3L.

DRIVE BY WIRE

Drive By Wire – improvements will be much better throttle response, step on go pedal, vehicle will respond quicker…this DBW system is a torque driven system, it works by taking a certain amount of torque via engine and wheel and applies it to what the driver foot say it needs; a better way to explain it is its a torque limiter. It only allows so much torque at a given pedal position. Stock tables are conservative and numb at best and that’s why one would feel some times a lag or a goofy pedal with DBW systems. For a 7.3L this is one of the most critical areas that must be addressed and modified to generate more torque and throttle response. By reworking the OEM strategies makes your 7.3L seems as if 2 more cylinders were added over night!

TIMING

Timing- can be increased in most RPM areas for improved Torque and HP. Running a higher Octane fuel will net more power and economy. However, with a 7.3L even running 87 Octane fuel can yield some respectable gains in power and torque over stock.

SHIFT PRESSURES/SLIP TIMERS

Shift pressures can be increased and timers can be decreased to help keep trans temperatures down and give the truck or any vehicle a better overall feel. In a 7.3L RV shifts are quick and firm most of the delay between shifts are eliminated when using custom tunes.

SHIFT STRATEGIES

Shift Schedules – Our 6 speed shifting changes include much better up-shifts and much better down shifting . If you need better engine braking our re-calibration tune to the tow/haul mode and normal mode with do just that; hold your RV back while on the down side of a mountain or coming up to a stop sign.

WHERE IS MY ECU STRATEGY CODE & SWPN?

At the time of your order if your ECU strategy code is known, we will send your tuner loaded with tunes on your selected tuner. If this information is not known at the time your order is placed you will be provided a blank tuner to acquire the needed vehicle information.

Where do I find my ECU Strategy Code?

If using an SCT or Bully Dog Device: On your device under vehicle information, you will find your ECU Strategy Code. An example of an ECU Strategy Code is PKRK0R2.

If using an HP nGauge: Plug your nGauge into the OBD2 port the vehicle you intend to tune. Use the menu on your device to select TUNING, then proceed to select the PCM type and choose READ VEHICLE. Upon selecting “read” you will see a variety of vehicle options. Select your application vehicle such as: “2017 F150 Ecoboost 3.5L GTDI V6: PCM + TCM” “TC-277A 4M+TCM.”

WHAT TUNES DO I WANT FOR MY 7.3L CLASS A?

CALIBRATIONS that are available for the 7.3L Class A are:

Our signature 87 octane RV Daily Tow tune.

The NEW Ford 7.3L V8 in the F53 chassis RV with the 6 speed transmission. We are very excited by the end results to say the least this pushrod V8 will run circles around the tried and true V10. On 87 octane only; Top end RPMs we see gains of 128 HP and 150 TQ (WOW factor here) , mid range we are seeing 21 HP and 33TQ and low range we are seeing 16 HP and 47 TQ. Stock the engine according to Ford in a F53 makes peak 350 HP at 3900 RPMs and 468 TQ also at 3900 RPMs and you can see by the stock runs on the dyno graphs it does make its peak there BUT its still making power look what 600-750 more RPMs and keeping the throttle from closing does! Power if you need it; you have it on tap. And it’s still safe with a solid low end operating range of 1500 RPMs to 4650 RPMs. But wait there’s more; our signature shifting pattern has been applied both in Normal mode and Tow Haul mode and just like the V10 the 7.3L has some lazy shifting.