i need to know if my coop can be run on standard unleaded or do i have to put super in or v power as my skyline had to have v power no matter what. also will i notice a power drop by running unleaded or not?

Is your Coupe standard?

yep just has has a induction filter on it
what mods can you run before having to put v power in?

it should run on standard unleaded if your keeping it standard. The higher octane fuel is less likely to pink so i would say that you don’t want to use a mod chip if your using the lower octane fuel,.

V Power will also keep your engine clean too and uses some lubricant stuff that i don’t really understand what that helps.

You could just try low octane cheep fuel and buy a fuel system cleaner now and again

I've seen some studies which show using vpower gives a better mpg under like-for-like driving conditions, but if it's a noticable improvement in performance (ie acceleration) you're after, you won't get it unless your car is specifically mapped for higher octane fuels

yeah to be fair if its safe on a standrad car with not chip then i will give it a go and see if it affects performance and mpg

On a standard car I think you'll find you get a slightly better mpg but no noticeable improvement in performance. Whether it actually has any longer term benefits on the health of the engine I'm not sure - they claim it does, but not sure if this has ever been proved.

For the record 95 octane fuel is what's listed in the Coupe manual

It is safer IMO to use v-power just in case your car is running lean, the coupe is known to have poor wiring to the petrol pump at the back and 10 years or more of corrosion can't help.
You are talking about £4 difference when you fill the tank so stop being such a tight wad!

I would say stick with the 98-99 stuff unless you have your car RR'd and can clearly see that the AFR is safe on 11.3-11.7. My car was run on the 'good stuff' for 50,000 miles on a Gtec1 and when I finally had it RR'd (yes what an idiot ), I found that it had been running at 12.5 pretty much across the entire rev band for four years I'm sure the higher octane fuel helped my car...

Apparently turbocharged cars get the greatest benefit from higher octane fuel, and only then if they're making big specific BHP (whether as standard or after modifications), or set up to like the stuff (advanced ignition).

Damn you! Now there's something else to make me even more paranoid about mine

yeah but if am fuel pump goes it goes and on boost no type of fuel will save you . the diffrence a year from v power an unleaded with my milages is £468 a year so near my insurace ok so im tight but with a rescion looming il think your get more of this lol

This old chestnut.

Cannot find the old post but studied by a German company on BMW/Porsche range and in like for like tests Optimax (as it then was) provided better response, BHP the lot. The higher power vehicle you used the more the gain you would see in BHP which at the top were pretty good gains.

The only thing not tested was engine wear for obvious reasons.

V-Power on a modded Coupe, standard for a standard Coupe afaik!

FWIW, on the rolling road day we did at Powerstation many years back, the cars that were running Optimax all held boost longer than those running normal fuels, standard and modified.

is there a big diffrence from 97 ron sul and v power on these?

I definately think any higher octane fuel increases the performance of my standard coop. Smoother throttle response, slightly quicker pick up and just pulls that little bit more. I only have 95 in mid-wales but I fill up when in Cardiff on tesco 99 and there is for sure the difference i've just explained.

Interesting news Scooby!

I notice the difference between 95 & 99 on my car. It doesn't like BP 97 - it seems to hold back, up the rev range when compared to V Power / Tesco 99.

We've got a Tesco 99 RON near us, I might have to put a few tanks through it, see if it works well!

Never noticed any difference between Tesco 99 and 95 on a standard coupe. There may be a difference of a few BHP that can be measured on a dyno but in terms of feeling it on a 1.3 tonne car, I cannot notice it. Still keeping up with all the latest hot hatch machinery no matter what ron I use.

V-Power is now only 3p a litre more than standard unleaded at my local Shell station, it used to be 10p a litre more, so now the extra economy alone probably more than covers the extra cost of it anyway...

Definately worth putting in V Power at that price difference. In local Essexland, the difference is 9p a litre.

its still alot more here. i can get ul for £1.11 sul for £1.18 and v power is like £1.23 so 12p difference from ul to v power and with my milages thats like £370 a year more

Must admit the v-power is around 8-9p a litre dearer round here too. However, it's stil cheaper than BP ultimate (which isn't as good as vpower) and around the same price as Tesco 99.

so for an extra 12p a liter do i go for v power or not? or for a extra 7 p a liter sul or save the money for something else like when the bloody thing breaks lol

If it was me, on a standard Coupe and considering it's 12p a litre dearer, I'd be going with shell 95.

If you move closer to Mattw (so to speak ) then I'd be tempted to go with vpower

Hmm.. I bet that's still not much help?!

Yeh, same here. It's 9p difference between both, at a shell garage. If Sainsbury or Tesco come into the equation, the difference between Vpower and Tesco 95 is 12p, too. No way I'd bother with Vpower for 9p a litre more, let alone 12p :o.
It will be Tesco 99 everytime if I need SUL.

il have to have a think about it

Off topic, but Peanut was it you that span the coupe on the Roundabout joining the braywick road?

Tesco 99 is cheaper here and has an amazing set of 2 dual carriageways to test it on right next door lol!