TRD thermostat for track use. Yes or No?

[ashley]

Coolant logs no problem, mapping with two different stats? Not gonna happen

[greeny]

I run a trd stat in mine. Also helps to drag some heat out of the oil.

Why would they only map a base map on the engine dyno?

If it's been fully mapped on the engine dyno why do they then tweak it further? (Apart from coolant temp and inlet temp corrections?).

[jon]

On the Rev 3 ECU, 82c is regarded as up to operating temperature, i.e. no extra fuel or raised idle.

[ashley]

I run a trd stat in mine. Also helps to drag some heat out of the oil.

Why would they only map a base map on the engine dyno?

If it's been fully mapped on the engine dyno why do they then tweak it further? (Apart from coolant temp and inlet temp corrections?).

He fully maps the engines on the dyno (I shouldn't have written base map in my original post), mainly trying to get a nice linear response to throttle position. Then it's down to tweaking on the track in relation to how the different drivers want the cars to feel...as you say: I get the impression most of it is on the dyno before the engines go in the cars.

Have to say I don't know the full details, he's been sooo busy since he went to work there, we barely see him anymore. Very successful first season though, and a lot more responsibility for BTCC next year...the boys' done good

[Marf]

Why would they only map a base map on the engine dyno?

If it's been fully mapped on the engine dyno why do they then tweak it further? (Apart from coolant temp and inlet temp corrections?).

1. coolant temp and inlet temp corrections

2. You can never fully simulate real world load on the engine on a dyno

[greeny]

I run a trd stat in mine. Also helps to drag some heat out of the oil.

Why would they only map a base map on the engine dyno?

If it's been fully mapped on the engine dyno why do they then tweak it further? (Apart from coolant temp and inlet temp corrections?).

He fully maps the engines on the dyno (I shouldn't have written base map in my original post), mainly trying to get a nice linear response to throttle position. Then it's down to tweaking on the track in relation to how the different drivers want the cars to feel...as you say: I get the impression most of it is on the dyno before the engines go in the cars.

Have to say I don't know the full details, he's been sooo busy since he went to work there, we barely see him anymore. Very successful first season though, and a lot more responsibility for BTCC next year...the boys' done good

Good stuff

[greeny]

Why would they only map a base map on the engine dyno?

If it's been fully mapped on the engine dyno why do they then tweak it further? (Apart from coolant temp and inlet temp corrections?).

1. coolant temp and inlet temp corrections

2. You can never fully simulate real world load on the engine on a dyno

Coolant temp and inlet temp offsets will be a 10min job for a decent mapper once in the car.

And on a roller dyno maybe. On an engine or hub dyno every point on the maps should be able to be hit, so regardless of what car the engine go's into it should be fine.

Although I'm certainly no expert so await to be corrected!

[Marf]

It's not about hitting every point on the map. It's about the load on the engine.

http://oldfuelinjection.com/?p=4

Load may be higher or lower on the road when compared to a dyno, meaning the fuel/spark map will need to be tweaked.

[greeny]

As I say I'm not sure, but if every point on the maps has been tuned and reached on a hub or engine dyno then there's no other load points to tune?

[Marf]

Nevermind