R

Rangey-V8

Formerly known as Simon1975
Just thought I would share this info.

I fitted a PSI Powerbox a few hunderd miles ago and the dash said 27.7 at the time and was on that figure for a month or so.

It has now risen to 28 and it may keep going up with a bit of luck.

So I'm very happy to have extra power and better fuel economy.

:)
 
Check it brim to brim and you may find there is no difference, on mine the the dash lies with a powerbox type plug in fitted as the engine ECU thinks it knows how much fuel is being used but the power box is changing/increasing it to produce more power.
 
Datatek said:
Check it brim to brim and you may find there is no difference, on mine the the dash lies with a powerbox type plug in fitted as the engine ECU thinks it knows how much fuel is being used but the power box is changing/increasing it to produce more power.
Click to expand...


Spoil sport.
 
Simon1975 said:
Just thought I would share this info.

I fitted a PSI Powerbox a few hunderd miles ago and the dash said 27.7 at the time and was on that figure for a month or so.

It has now risen to 28 and it may keep going up with a bit of luck.

So I'm very happy to have extra power and better fuel economy.

:)
Click to expand...

Don't you mean more power OR fuel economy. One thing you will learn about engines is you cannot have more power AND better fuel economy. If you use the extra power you use more fuel. Simples.
 
wammers said:
Don't you mean more power OR fuel economy. One thing you will learn about engines is you cannot have more power AND better fuel economy. If you use the extra power you use more fuel. Simples.
Click to expand...

hi wammers,have you got a psi powerbox fitted to your p38.
 
its single tailpipe but i want double but it has to be a single centre section and then back to twin unless i make my own and weld it all up myself!
 
gavbriggs said:
its single tailpipe but i want double but it has to be a single centre section and then back to twin unless i make my own and weld it all up myself!
Click to expand...

mine is a double rear box,so yours comes from the engine in one section,ie the cat.then into a centre section then into a single back box.
 
wammers said:
Don't you mean more power OR fuel economy. One thing you will learn about engines is you cannot have more power AND better fuel economy. If you use the extra power you use more fuel. Simples.
Click to expand...

I'm afraid I do not agree with that. The way I drive the car is not full on by any means, and with that style of driving the fuel economy is better with the PSI installed.

e.g. Rather than having my foot to the floor in the past to struggle up an incline at 55mph, it now cruises up nicely without excess throttle.

I do however understand what you are saying.

But the PSI Powerbox is supposed to use the fuel more efficiently than the original set up, hence better preformance and fuel economy.

Anyway, argue with PSI:

"A PSI Powerbox provides a perfect command in Parallel with the original engine Management system increasing Performance and in most cases Ecomomy without Due stress on the engine and Thermal Overload."

www.psipowerbox.com
 
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