Originally Posted by Renton
Originally Posted by Fiecos Dan
suffering ACT temps in December? could it not just be heat soak causing it?
i moved my ACT ecu sensor from the plenuim to a samco hose to stop this.
Tell me about it!
I'm going by the SPA temp probe on the exit of the intercooler. It says we've got a hotter than ideal charge, so I guess we need to make it cooler rather than try tricking things.
did your Spa read the same as the ECU? when mapping, where no heat soak was a issue?
i did alot of playing and testing with my ACT sensors (ecu and a aftermarket gauge) i fitted the them next to each other on the plenum, and both read the same all the time.
i then moved the gauge one into my solid boost pipe between the throotle and intercooler, (insulated by samcos both sides, and heat wrapped) and on Top speed runs they still run the same, But when they was heat soak present, ie Sprints or trackdays there was a huge difference from the actual true ACT.
So they are both now fitted there and i advice for you to do the same
I didn't have to change my map, as it was mapped where No heat soak was present, But i did check the whole map.
You can barely see them fitted, but not clear.
Originally Posted by pondscum
Moving the ACT sensor can require a remap, so definately not an ideal solution to try and get lower numbers.
The temperature correction tables that have been mapped for the ACT calibrated as it is currently in its present location would not be correct for it moved somewhere else which will give a different reading for what is in reality still the same temperature of charge actually entering the head.
With regards to the manifold, they are well proven at far past the flow rate you require for the sort of BHP you are quoting there, but as always with any manifold you can never have too much data so EGT senders in each cylinder would be a cheap bit of worthwhile insurance IMHO.
Not if it was mapped with NO heat soak, ie on the road/run way, where the car was moving cool air thro the intercooler before it was mapp'd each time.