Thread: V8 Bruce Davis chip upgrade

Originally Posted by Tombie

First - Really glad you're happy with the result...

But 40%.. No way....

Not from a chip on a Rover Petrol V8... Closer to 15% maximum.

Again, as long as you're happy.. The driving experience has improved for you and you are enjoying driving it now - that's all that counts.

Have you owned it quite a while? If so, like shocks you probably havent noticed it getting to the state it was before the chip. Its such a gradual decay in performance.

The mapping would have given a bit more in the mid range though, so you would be getting more torque right in the 'driving band' of the rev range.

Sorry I ment the 40% including the airflow meter and both O2 sensors and chip, I've had the car prob 7 months now and it's been the same since I bought it, I was actually happy with the way it went that's why I never suspected anything was wrong... 12.5L per hundred consistently unloaded, car trailer with a car on car weighed 1.4 ton and trailer was 1050kg plus all the other stuff in the car and did 14.5L per hundred Penrith to Stuart town cruising just over the speed limit the whole way so economy was no indication either not to mention I was still whooping young blokes on their p's in little squirts lol so really was shocked and a little confused when he jumped in it gave it a boot full up the road and come back saying its was running like a **** box!!! Hahahaha but who am I to be offended by what he said ( I really was quite offended and shocked but hey he would know right!!) so any way each time he took it for a burn up the road I could hear the difference in the note of the exhaust and the way the motor reved, like I said it was shocking the difference from driving there and driving home......

Is this the fuel economy thst everyone is getting? I don't get anywhere near this. I do have a lift, bar etc but I will get about 18-19 around town just doing short trips and 16 on highway.

Originally Posted by disco2_dan

12.5L per hundred consistently unloaded, car trailer with a car on car weighed 1.4 ton and trailer was 1050kg plus all the other stuff in the car and did 14.5L per hundred Penrith to Stuart

Shhhhhh... You'll have the Td5 crew all looking to swap over to the (far superior) V8.

Glad you're happy with the results.

I'm not surprised that you think it's a 40% gain factoring in the MAF and o2 sensor issues.

It can't have been running too well before the chip and fix up. You wouldn't have known though, as you've had nothing to compare it to.

Originally Posted by walker

Is this the fuel economy thst everyone is getting? I don't get anywhere near this. I do have a lift, bar etc but I will get about 18-19 around town just doing short trips and 16 on highway.

I'm getting around 16L - 17L per 100 or thereabouts. Most of my driving is short trips, and I only work 6.5km's from home.

That's with lift, 33's, arb bar, etc... And, I'm on standard diff gearing at the moment too.

The best round town economy I got from brand new was a repeatable 14l per 100k. Mines a manual which got better economy than the autos. I have now had head porting and a crow tow cam and new valve seats and timing gear and tappets and excellent compression. Mines a HC and I still dont get anything like 12l per 100k...to do that I would have to ttavel everywhere on the highway at 85kph...then again I have 31inch at2 tyres roof rack tjm front bar tow and recovery gear onboard alongwith lpg

Cheers

just a thought on economy

4l engine = 16l/100km which is 4L fuel per 1L engine
2.5l engine = 10/100km which is 4L fuel per 1L engine.

in terms of volumetric efficiency, they are the same.

You need to put a smiley face or wink to show you are being funny or sarcastic!

Originally Posted by walker

You need to put a smiley face or wink to show you are being funny or sarcastic!

but i wasn't being funny or sarcastic