knock, knock who's going to tune my s2 for me?

[prj]

Don't be overzealous.
Even the RS2 can run on 95 octane without bending rods.
This is because Motronic has per-cylinder knock detection and it will retard timing if needed.
All the generic chips have quite a bit of headroom on 98 octane.
I think you are worrying too much...

A friend of mine made some slight bananas (engine still ran fine with bananas).
This is because he used to run some weird chips and 2-2.2 bar boost, and had really lean AFR.
He had very hard knock, and still it took him ages like that to bend the rods slightly.

That was before we met... after we met I remapped his car and he had no knock, but it was too late by then...

[s2_wot]

can I ask the stupid question of whats the best way to go about lowering the compression ratio, double up on the head gasket or modified pistons? I must do a search on here.

[driftin jo]

If all you can get is rubbish fuel then I would suggest dropping the compression a little bit , that way you can make full power .
Take it to MRC on the fuel you are going to run it on everyday and with the lower compression you will get maximum potential out of the RS2 set up .

[s2_wot]

I'm building a similar spec motor and will be using Pauls chipsets. If money was no object i would book it in with MRC.

That might be the safest way to go to get her running alright, will definitely talk to Paul long before I turn the key.

[prj]

You seem to have RS2 setup replicated... you can use a generic chipset and it will drive fairly well.

Custom on a dyno is better of course, but it will cost a lot more, for maybe 10% increase in performance.

[mcandmar]

I'm building a similar spec motor and will be using Pauls chipsets. If money was no object i would book it in with MRC.

[s2_wot]

RS2 Turbo, Wagner Black intercooler and cast exhaust manifold, 3" exhaust, RS2 injectors + headgasket.

I've yet to decide on some sort of fancy stronger rods. In general we have rubbish fuel here which is one thing that encourages knock. So I want to tune the car using topaz fuel I can buy locally.

I would like to start talking to a tuner and plan for the costs involved or can I get the best out of the car with s2central working it out based on experience.

@Paul if you read this, would there be any benefit to renting a 4wd rolling road for a few hours somewhere this side of the pond, and with you behind the computer.