sure, but from a plug in 50 quid chip? it's a bit like when you dynojetted your bike, what you actually saw was throttle response and free breathing, and mistook it all for big power.
I need to get all my tables out to see what this 2.5 can really do with tickling!
Surely even fuel mapping to be effective really needs a good rolling road and a programmable ecu to maximise the potential?
Little horsepower costs big money, and big horsepower costs even bigger money! - that's what I remember!
Throttle response is deliberately damped in modern cars to help emissions, and, of course, it might make the engine feel more powerful, but it makes very little difference on the road.
In addition, ignition timing is deliberately conservative (less so with the introduction of knock sensors) although an efficient engine shouldn't need to run hazardous levels of ignition advance anyway.
A little powern can be gained by mapping the engine with regard only to power output and not to emissions.
Remember the manufacturer has to get the car through type approval which involves
everything that comes out of the exhaust from a cold start being analysed over a simulated test drive.
I would hope these chips have been developed on a rolling road - once you're down to getting the last few percent out of an engine you simply can't do it by "seat of the pants" but for 50 quid, who knows what you're getting?
And, ideally, you would get each engine set up on a rolling road because no two are the same. Not a difficult or expensive exercise if you have a mappable ECU, of course....
Kevin
Author
Topic: Performance chip UPG - Too good to be true? (Read 4740 times)