Thread: PSI POWER UPGRADE

Had a quick look & it appears to be similar to a DP Chip in operation. To my way of thinking you would be better off with a remap . May cost a bit more but better product by far.
Here's a few of the better one's.

Superchips – petrol and diesel engine tuning, ECU remap software for maximum driving pleasure..
Diesel performance tuning and economy remap chip tuning for Landrover Defender Discovery TD5 Puma TDV6 TDV8
http://www.jeremyjfearn.co.uk/power.htm

Gary

Agree.

Piggy back (plug in inline) ECUs work by receiving the signal transmitted by the Engine ECU modifying it and retransmitting it. That takes time especially for a low power processor that the typical piggy back has. Modern diesels are finely tuned and inject up to 8 times per cylinder per cycle – these are extremely short periods of time that the injector piezo is open and even though this delay is only milliseconds the timing is now adversely affected. The Piggy Back can not predict when an injection event is going to be sent, it can only receive and react to the event, so all they do is hold the injector open longer, with the overall timing delayed.

A remap (new files loaded on to the engine ECU) allows the developer to modify the signal before the engine ECU transmits. This allows the ecu to open the injector (fractions of a millisecond) earlier & close it later (as apposed to opening later and closing later with overall longer open time), allows the number of injections to be increase in certain ranges, this means smaller volumes of fuel are fed in more often. It enables timing to be adjusted either direction. It enables flattening of torque curves, and customising the map to prevent a dead spot at certain rpm point. And much much more more.

In short, Piggy Back ECUs are good for vehicles that do not have the ability to load new ECU tune (like Toyota, or early TD5 D2/Deefa). For vehicles that have the ability to load a new tune, remapping is the best way of retuning.

I paid $650 for Superchips remap for my TD6, so there’s no real cost advantage either.

Have a look at the performance market, they are all remapping, if they can’t, they replace the ECU (or sometimes the chip with in the ECU) to one that enables remapping.

Thanks Gary and Harlie
Look like its going to be the superchip by Bluefin.
Just wondered Harlie if its really noticeable,the power and fuel performance gained ?
Paul