Thread: Bulls bars

Initially no significant increase to fuel efficiency with an xrox bar. Although it is one of the lighter steel bars available.

I wish I could say the same now as my fuel consumption has sky rocketed. Like 27 L/100km Not sure what has gone wrong still trouble shooting. I just gave the MAF a good spray with a MAF cleaner. Not sure where else to start

I wouldn't expect it to be worse (if at all) as it sits in front of the car and at the same level as the bonnet at its highest point, slightly higher than the factory bumper at its lowest.

Having an awning attached to the roof would be worse for drag.

27L/100km is unreal! I wonder why that has happened Steve? Surely not related to the bullbar - that is a massive jump!

Cheers
Keithy

Wow! 27/100km that's horrible! My wife and I just went away for the weekend to 1770 with the ski on the roof and I returned between 14.5-14.7/100km which I thought was OK seeing it was really windy and sat on the speed limit 100/110km.

I must admit though I am a little worried about adding gear if the fuel economy is going to blow out to figures like that!

Hi

During a discussion here recenctly is was agreed that wind resistance (eg a stacked up roof rack) has a much bigger effect than the weight being carried.

So i would imagine the genuine bars would make little difference, and after market bars would, in theory, have a slightly higher Cd than the factory job.

There is a little on modified front bumpers here [ame="http://en.wikipedia.org/wiki/Automobile_drag_coefficient"]Automobile drag coefficient - Wikipedia, the free encyclopedia[/ame]

Regards
Steve

Originally Posted by intheozone

I wish I could say the same now as my fuel consumption has sky rocketed. Like 27 L/100km Not sure what has gone wrong still trouble shooting. I just gave the MAF a good spray with a MAF cleaner. Not sure where else to start

Hi mate

Do you have access to any kind of diagnostics? Even a generic ELM OBD connector and free app will give you some data about your engine

Steve

I recently got a steel winch bar fitted in place of the original plastic, I'm not sure what the weight difference is but with a 12,000lb winch it could be about 50Kg more.

Although heavier the new bar doesn't have the lower 'spoiler' section so I don't reaaly know whether wind resistance has increased or decreased but I haven't noticed any change in fuel consumption and I get around 17/100km around Brisbane, the only highway use is with a camper trailer and that also returns about 17/100km. Beach driving on Fraser (hard sand) was returning about 22/100km in high range and 34/100km in low range on softer sand.

I was getting about 21/100km around town but a couple of tanks of premium fuel with extra injector cleaner added has brought it down to 17 which seems OK for a 2000 4.6 with 160,000km on the clock.

Sorry to hijack the thread....

Might have to run a course of tanks with some injector cleaner. Hope that helps a bit. Must say it is frustrating to be using so much fuel as it really takes the fun out of driving.

I don't have any kind of fault mate so don't know what the engine is doing.

RC42 you and I seem to be getting similar fuel consumption. At the moment around Brisbane mine is using about 20/21ltrs per 100km. I have just put one bottle of injector cleaner through it. Did you run a few tanks of 95 or 98 octane?

Cheers