Is there any diff between a pre runner and x other then looks and maybe suspension?

 

Yes, the tighter road tuned suspension, the X Brace that increases frame rigidity (also give the X-Runner it's name), the sporty road tires and rims, different final drive ratio (differential gearing), and the thicker anti-roll bar. The X-Runner only has 7.5" of ground clearance a opposed to the prerunners 9.5.

The biggest difference is the suspension

The prerunner has the same suspension as the 4x4 but without the front drivetrain. The X-Runner as a completely different suspension all it's own.

 

^^ rear end gearing is different

customtacos.com would be a better place for this question. More xrunners there

 

Basically suspension but not diff as far as engine?

 

The only difference from a turbo perspective is that the prerunner has more room. The kit will work on a prerunner. It's my understanding that it hasn't been released yet, although URD has a supercharger available right now. Trd is also close to releasing their 'charger, but they have been saying that for years.

 

to answer your question about a diff. in turbo or supercharged, turbo charged suffers from lag in the lower rpm range. the s/c gives you instant power starting as soon as you step on it. however, there is some sort of minimal loss called "parasitic loss" because of the fact that it requires some engine power for it to run. and i think theyre generally more expensive ?

 

not always true about superchargers having no lag, centrifugal superchargers (the ones that look like turbochargers mounted to the engine) are identical to turbochargers other then some differences in turbine design, they do have something resembling turbo lag because the engine has to get up to the right rpm before it can start building boost. With that said, i believe the URD and the supposed TRD chargers are not centrifugal superchargers.

 

Try this:
http://www.xr-underground.com/

 

to answer your question about a diff. in turbo or supercharged, turbo charged suffers from lag in the lower rpm range. the s/c gives you instant power starting as soon as you step on it. however, there is some sort of minimal loss called "parasitic loss" because of the fact that it requires some engine power for it to run. and i think theyre generally more expensive ?

i dont really agree with the turbo charge lag because it really depends on what size turbo you get. a smaller turbo spools faster and benefits from readily available boost but lacks at higher rpm speeds. a bigger turbo takes longer to spool up but offers more power at higher rpm speeds. in short get a small turbo for taking off "drag racing" and get a bigger turbo if you want to pull on someone on the highway.

 

yea forgot to mention that. an example would be garrets larger GT turbos. or i think a twin turbo setup would also eliminate lag. but still. smaller turbines suffer from lag.

 

Some of the smaller turbo will start making boost at 1300-1500rpm ala bmw 335 or vw/audi 2.0. Guess you can call that lag.

 

you can always go twin turbo but you run the risk of maxin your credit card, lol.