Outer Limits 4x4 Board

Hi All

I don't know if it's a problem or not, but the rear leaf springs on my sierra are almost straight and the front leaf springs are bent up in the middle (opposite of what you normally see).

Is that normal for sierras or are my leaf springs overly worn out and nearly ready to break? Should I ...

Top speed increase from 100km/h to 125km/h is a pretty big increase in power, thats an increase of 56% in wind resistance.

It would be good if there was a place that would guarantee an increase in performance, verified by witnessed dyno tests.

Has anyone done accurate measurements of fuel economy ...

Do extractors make a difference? Has anyone tested power output before and after installation of extractors on a sierra?

I am afraid that they will increase power by an un-noticeable amount.

Hi everybody

I use my stock standard sierra for beach fishing and most of the time it is ok but I find it struggles in the really boggy stuff. Anything but first gear low range and the motor winds down and stalls.

I don't want a performance vehicle, I just want a bit more confidence in the sand ...