I converted to V power a few months back after only using Tesco crap,
This week I used Tesco again as it was all that was available at the time.

Tesco fuel doesn't last as long as V power, thats for sure. My LCR runs far better on V power
 
I converted to V power a few months back after only using Tesco crap,
This week I used Tesco again as it was all that was available at the time.

Tesco fuel doesn't last as long as V power, thats for sure. My LCR runs far better on V power

See mines the opposite, cars are funny things lol
 
Never tried the Tesco 99, there isn't a Tesco for miles. Compared to standard Shell Unleaded my Leon Cupra 180 prefers VPower. It idles better, picks up better and seems to run through the revs better. I also seem to get 20-30 miles more to a tank so I think it's worth it and its all the car gets these days. Mine isn't mapped at all.
 
See mines the opposite, cars are funny things lol

lol same here.car now even runs a bit better and responsive after I fitted my side mount from turbo revs,its all good and no bad thing to say about the item,the sensor bolts straight in and fits as usual:)
(by the way)before ppl say why not a front mount...this and that id rather just keep it simple no fu55ing around with hoses ect just in and out,im happy with it.
 
I have heard nothing (recently) but negative about these bigger smic.

I dunno mate,bolted in and all fitted ok,brackets lined all up and like I said the sensor was fine,no lights nothing,no blow off hoses either,just trim the plastic colwing but its ok,tbh it was more of the pain to get the bumper off :shrug:
I would get the oe one but for the price its just way to much,it don't cost 250 odd quid to make them a mate of mine use to make them.like I said I don't wanna run silly power.
so I don't want a front mount so the next best thing could be a side mount
 
I've used a few full tanks of Momentum 99 before from my regular V Power and the only thing I noticed was around the exhaust, it was covered a lot more in sooty deposits than when on the V Power.

Performance wise, noticed no difference. My car was mapped on V Power.

For me they're both very good and I'd happily use either over and over.

:)

I also noticed this, seemed to make my egt's higher too, I'd expect that from a slightly higher octane but for what I could tell no gain over v power....
 
I also noticed this, seemed to make my egt's higher too, I'd expect that from a slightly higher octane but for what I could tell no gain over v power....

Why do you think higher octane would increase EGTs? Wouldn't it be the other way around? The higher octane allows for more advanced timing, meaning the burn is more likely to have finished before exhaust valves opening?
 
Why do you think higher octane would increase EGTs? Wouldn't it be the other way around? The higher octane allows for more advanced timing, meaning the burn is more likely to have finished before exhaust valves opening?

The higher octane allows for more heat. The lower octane will have to run cooler to avoid knock.
 
The higher octane allows for more heat. The lower octane will have to run cooler to avoid knock.

Can you explain what you mean by 'will have to run cooler'? Surely the only way to cool down burn temps is to alter fuel mix (richen out)... Our ECUs don't adjust AFR based on knock readings so can't see how it will run cooler based on what fuel is being used...

The way knock is avoided on lower octane is by retarding timing, which will in turn increase EGTs as the burn period is being pushed closer to when the exhaust valves are opening.