Posted: Jan 01 2007 at 11:25am | IP Logged

If you're looking for that top speed, it will be fun.  As some trucks were tuned differently than others, even when it comes down to the year and model.  I had an 02 4x2 KC KA24DE Auto, top speed I've hit in it was 118.  There is a guy here who has the same thing, but has hit the govrner at 105.  I rode along to see if it was just power lag, or actual govrner, and it was. 

But if you're looking to max at that wonderful truck on the interstate, here are a few things that will help.

1. AEM Brute Force Intake
-I recommend AEM because of the dry flow filter, K&N and other companies use filters with oil, and these put residual oil onto the air temp sensor and MAF sensor, and can cause all sorts of problems.

2. A good exhaust system
-Upgrade that exhaust to either 2.5" (4cyl) or 3" (6cyl) and put the muffler you like in there.  Don't bother with high-flow cats unless they cost less than your stock cat.  Research shows that a properly functioning stock cat flows the same as the supposed High-flow.  Though in some cases in cheaper to go with the High-flow.  Muffler make little difference in performance, and more into sound.  Only when you're going for top fueler performance that getting the right muffler become important.  But going without a muffler actually robs power (refer to basics of adding HP article)

3. A lightweight bed cover
- Mythbusters already prove you get horrible gas mileage by letting down the tailgate.  But they also pointed out that the tailgate does create a drag point.  I noticed a 8 MPH top speed gain just by putting a bedcover on mine.  If you are going to get one, do some research and price comparing.  Honestly, I cannot stand the soft tops that you have to put snaps into.  I like something more rigid.

Those 3 will help you increase your topspeed, or at least help you find the gorvner.  If you still haven't found the gorvner (and at this point I must point out you're insane to keep trying, Cops don't issue tickets at 100 MPH+) you can try more internal mods of the engine.  JWT makes cams and such.  You can also go to www.importperformanceparts.net and they might have a engine kit.  If not, they can make custom pistons at a reasonable price.

Posted: Jan 15 2007 at 9:34am | IP Logged

You can easily tell the difference between the top speed of the vehicle, and the gorvner. 

Top Speed you'll max out a certain speed, and won't continue to go any farther, but the engine still maintains it's RPMs.  You'll slow down or gain speed from their depending upon the weather and terrain, but not from the motor.

Govrner, you'll reach a certain point in the RPMs, and top speed, and the motor will lag back down to a safe RPM bringing the truck down to a safe speed.  If continued it will seem as if the engine is pulsing with its power.

Some vehicles never reach their govrner because of wind resistance, or the fact the motor just doesn't have enough power to reach it.  Depending upon it's setting as I mentioned before.  I did 118 in my 02 Frontier, and never did hit the govrner.  But someone with a similar truck to mine hit their govrner around 108 or so.