What fuel?

[mk1fan]

Probably been done to death.

Tamy has started running really roughly. I've been using regular unleaded. Should I be using super unleaded instead?

[SergSC]

Mine runs better on Shell Vpower than BP ultimate, but I could be imagining it...
If you feel yours is running rough, get the throttle bodies tunned. Mine was rough in cold weather when I first got but the tune transformed it.

[alex_gray255]

Yes, would suggest balancing the throttle bodies as well. Worked wonders on my car.

[shep1001]

So far as I am aware the std TVR engine/ECU combo can't differentiate between the different octanes of fuel. That said I just avoid supermarket stuff and fill up with Shell or BP

[sonnylad]

shep1001 said:

std TVR engine/ECU combo can't differentiate between the different octanes of fuel.

It wont know the difference but chip/map will have been for either 95 or 97.

Handbook should state which to run.

[mk1fan]

My handbook and the sticker next to the fuel filler say 95RON. Previous owner only ran 'Super'.

I'll sort out a service - the airbox looks borked / doesn't seal up properly isn't going to be helping.

[tamore]

Only ever put the most convenient fuel in mine, usually Tesco or shell 95 RON. Runs well, with lots of nice overrun.

However, I used esso 95 in today, and no more pops and bangs. Running fine though.

Coincidence or has the ecu changed its settings in response to the esso fuel?

[Pop Pop]

Tam handbook say's "normal everday use - Premium unleaded 95 Ron
Track use - Super unleaded 98 Ron"
I use Shell 98, seems to suit the car and push on motoring just fine.