Hi all,
I just installed a Sprintbooster in my 2008 Liberty. It's a trial run for 30 days to assess drivability/practicality issues. Yes, it's an expensive item. Yes, it does not increase horsepower or torque, just pedal sensitivity. This Youtube video explains it well: http://www.youtube.com/watch?v=0yrBpL45u-k
I'm looking to improve what I consider sluggish response in highway situations.
It seems inherent in Drive by Wire setups.
The installation went as follows:
1.) Open driver's door and leave it open for ten minutes to cancel a possible MIL light.
2.) Using a 10 mm deep socket on a 1/4" ratchet with a short extension and universal joint, remove the two PLATED nuts located at upper left and lower right of pedal housing. This is NOT the instruction provided in the official Jeep Service Manual for disassembly!
3,) Carefully pull down the back of the flexible black shield under the dash towards the brake pedal pad.. This will permit the acclerator pedal harness some clearance as you remove the pedal housing from its mounting bolts.
4.) Gently ease the pedal assembly off the bolts.
5.) Pressing the narrow tab on the harness connector, remove the connector from
the pedal assembly. A small screwdriver may be needed to provide a bit of leverage.
6.) The Sprintbooster has a matching connector that fits directly into the pedal assembly. Make sure it seats securely.
7.) Plug the control pushbutton and wire into the side of the Sprintbooster. Again, make sure the connection is secure.
8.) Attach the harness connector to the remaining socket on the Sprintbooster. Check for secure fit.
9.) Now comes the surprise: when I tried to reinstall the pedal on its mounting bolts,
the harness connector was jamming up against the steering shaft.. Tightening the nuts would place a great deal of pressure on the connector SO...
I installed a heavy nut approximately 3/8" thick on each bolt. The opening of the nuts is larger than the bolt thread, so it's a slip on fit. Then I fitted the pedal assembly onto the bolts and tightened the 10mm nuts in place. The extra clearance is just adequate to allow the space needed for the harness connector.
10.) Carefully route the control wire away from the accelerator pedal and footwell
to a convenient SHADED area of the dash. I put mine just in front of the transfer case switch. I noticed that in bright sunlight, it is difficult to see the Green or Red colour glowing from the button when Sprintbooster is armed.
I'll move it elsewhere if this doesn't solve the issue.
I will report on drivablility/fun factor after a few days testing. So far it's looking
promising.
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), the Sprint system mentioned in all likelihood simply fools the Voltage transmitted in the Drive by Wire system changing the readings from the pedal. Total waste of $$ and provides no real benefit. You could do the same thing by disassembling the receiver on the pedal and carefully bending the brushes with a pair of pliers. In fact, it has been done on other drive by wire systems that were incorrectly calibrated from the factory 