Thread: Engine chip upgrade and/or intercooler upgrade

Not so easy to disable the EGR on a PUMA.

Blanking it off will cause the engine light to come on and record faults and cause warranty issues with the dealer.

It needs to be close electronically. Email Bell Auto Service for advise on how to do this with new 2.2lt.

https://secure.bellautoservices.co.u...'menuid=24

Originally Posted by Drover

Not so easy to disable the EGR on a PUMA.

Blanking it off will cause the engine light to come on and record faults and cause warranty issues with the dealer.

It needs to be close electronically. Email Bell Auto Service for advise on how to do this with new 2.2lt.

https://secure.bellautoservices.co.u...'menuid=24

Dont think I'd worry about blanking on the puma, just disconnect the power to the valve from brand new...until I get around to remapping. I can live with the engine light in the meantime.

Think I might talk to DPL in Sydney though for the remap...just call it personal preference.

Regarding warranty and fault logging...I can just reconnect it before a service, long enough for the engine light to reset itself.
If they ask any questions I'll just shrug my shoulders and say "I dunno, Im no mechanic I just drive the thing"

The engine light will reset after a set amount of "starts"without a fault code being received. From memory I thinks is was 3.

Tombie might know.

I've heard from a couple mechanics that the EGR can play a vital role in protecting the engine in the event of a turbo over boost situation where catastrophic damage can be done very quickly.

I've also heard very mixed reviews on inter coolers and the increased power figures that they purportedly deliver. Again, a couple different mechanics (of whom some are specialist diesel mechanics) have mentioned results with some inter cooler installs where the gains have been marginal at best.

....so much conflicting information

EGR in *some* engines has an additional butterfly which *could* be used to shut off the air to the engine in the case of runaway - but this is neither common, nor a function of the ECU so not very factual.

Turbine over boost is a product of Exhaust gas volume - and the EGR won't have a significant effect on this as it works predominantly at idle (so low exhaust volume anyway) and is closed at high load/rpm (boost).

As for intercoolers: just throwing an Intercooler on and expecting a power gain is not likely - there may, from flow changes/pressure drop etc be a slightly improvement.

What an IC allows is:
Improved cooling of intake charge (important at higher boost levels and temperatures)
Often better flow / reduced pressure drop through the core
More fuel to be added to the tune as the density of the air (from being cooler) carries more O2 to the engine.

So if you aren't planning to remap, unless your stock core is damaged and needs replacement, I wouldn't bother upgrading.

Originally Posted by Tombie

EGR in *some* engines has an additional butterfly which *could* be used to shut off the air to the engine in the case of runaway - but this is neither common, nor a function of the ECU so not very factual.

Tombie, AFAIK just about every modern small diesel with EGR has the butterfly valve, they cant get their EGR flow rates high enough without it.

It also serves the purpose of stopping the rocking/shaking of the engine at shutdown by cutting off the air intake...i.e. no/little air in the cylinders to compress. So it shuts every time you turn the key off.

Stopping the rare event of a runaway engine is a coincidental benefit.

Cheers
Tom

Well, the results are in following the chip upgrade.

After some good advice from various corners I decided to start the engine improvements with a simple chip upgrade from Steinbauer. The result is an increase of 25% in kW output and an astounding 35% increase in torque from 381nm to just over 515nm.

I've also added an after market additional fuel filter for extra protection.

If anyone would like a copy of the actual dyno test I'm happy to email it if people can pm an email address.

Are you doing an EGT gauge upfront ?