running in engine

[anonymous-user]

When your engine was mapped at 1.5 bar, the tuner will have set the map up to that point and will probably have made a safe guess at values for a little above in case you manage to hit a little higher boost. But, he certainly won't have been able to set proper tuned values for boost up to 1.7 bar. To be able to run the higher boost safely you'll need to get it back to the tuner and get him to flesh out the fuelling and timing for the portion of the map above 1.5.

[Marf]

No, I would bet money on it not auto adjusting.

ECU's that have this feature generally only make use of it during the tuning process, i.e. an AFR table is setup where you enter AFR's for various RPM/load points and then the ECU adjusts accordingly over numerous dyno pulls, this is then fine tuned by hand to give the final map.

Unless when you car was last remapped they set it up for 1.8 and then just turned the boost down to 1.5, its unlikely the map will be anywhere near correct for 1.8 bar of boost. As I said if you specified 1.5 bar at the last remap the ECU will likely have a boost cut just above that level. Thats how my Microtech works.

Personally I wouldnt just try turning the boost up on the controller to 1.8 unless you have a wideband oxygen sensor and access to the mapping yourself via a laptop, and a basic level of experience mapping the ECU.

Edited by Marf on Wednesday 2nd January 14:33

[marT350T]

ok thanks for the advice

[PJR]

marT350T said:

Its a mk3 polo with a mid mounted 1.8 20v turbo engine on emerald management

Nice I'll bet thats fun
Amazingly tough engines too (If we quietly forget mafs and coil packs for a moment). Those lumps can really take some stick.

P,

PS, Oh yes, running in! Im not really a believer in giving it death from the start, and dont see how an easy 1st 500 miles then an oil change can hurt. And I agree with the running in with mineral oil. I've heard this from a lot of well respected engine tuners in the past.
Having said that, tolerances and materials have advanced so much in recent years, that running in perhaps isnt quite the essential thing it once was say, 15+ years ago.

P,

Edited by PJR on Sunday 6th January 04:00

[marT350T]

PJR said:

marT350T said:

Its a mk3 polo with a mid mounted 1.8 20v turbo engine on emerald management

Nice I'll bet thats fun
Amazingly tough engines too (If we quietly forget mafs and coil packs for a moment). Those lumps can really take some stick.

P,

PS, Oh yes, running in! Im not really a believer in giving it death from the start, and dont see how an easy 1st 500 miles then an oil change can hurt. And I agree with the running in with mineral oil. I've heard this from a lot of well respected engine tuners in the past.
Having said that, tolerances and materials have advanced so much in recent years, that running in perhaps isnt quite the essential thing it once was say, 15+ years ago.

P,

Edited by PJR on Sunday 6th January 04:00

That is the conclusion I have come too. Components have come along way in the last 10 years so the running in proceedure is not as critical as it used to be. The company who are building my engine run a TT in the British rallycross series and they said there running in was twice round a industial estate and they it was given death racing and it hasnt missed a beat in 3 years !

[GreenV8S]

PJR said:

dont see how an easy 1st 500 miles then an oil change can hurt.

The problem with the 'easy 500 1st miles' approach is that it doesn't bed the rings in. You only have a limited opportunity to bed the rings in, and they need load on them for this to happen. If they don't get loaded enough to bed them in before the bores have become glazed then they will never seal properly.