D2 vs D2a TD5 intercoolers

**fatman** · 26th January 2012, 04:33 PM

Originally Posted by Catmatt

Once I install a larger 'cooler, I'll have lower EGT's and lower temperature and denser intake into the engine....which will increase the performance and 'drive-ability' of the car.

Cheers!

Are you sure about this?
I drive a EU3 dt5 disco with a stage 1 Td5 Alive.
I am very pleased with the performance(don't want extra grunt),the diesel quallity here in Greece sucks(it should be named "smoke generator fuel"!!)
I was considering an intercooler upgrade but from what i've read,this mod by itself will increase turbo lag,so you must raise the boost and then i don't know if the remap i run is suitable and if i have to buy a booster box..
I like the idea of a bigger intercooler to keep the incoming air cooler but don't want to overstress the engine with extra boost etc.
The question is...do i fit a bigger intercooler(just to be on the safe side) and readjust the boost to the "nomimal" limit or i have to go from the beggining - new remap,booster box,boost over 19 psi?

**iPom** · 27th January 2012, 07:04 AM

Originally Posted by twr7cx

Bolting on an intercooler rarely makes any performance gains - a larger intercooler really just means you can change other things to make more power. Often people would find that fitting a larger intercooler would have negative effects on performance, the reason is that there is now a larger body of air to be compressed by the turbo, so the turbo has to work harder, but until you adjust the waste gate to suit you may find your boost pressures to be lower with the larger intercooler (but your potential maximum boost pressure levels are higher).

Yes, I'm aware of that....I figured fitting a D2a I/c wouldn't do any harm and for $100 dollars I get very small increase in performance so all in I'm very happy...I should probably have a play about the with wastegate now as per Fluids instructions posted previously on this forum.

**Catmatt** · 28th January 2012, 03:28 PM

Originally Posted by fatman

Are you sure about this?
I drive a EU3 dt5 disco with a stage 1 Td5 Alive.
I am very pleased with the performance(don't want extra grunt),the diesel quallity here in Greece sucks(it should be named "smoke generator fuel"!!)
I was considering an intercooler upgrade but from what i've read,this mod by itself will increase turbo lag,so you must raise the boost and then i don't know if the remap i run is suitable and if i have to buy a booster box..
I like the idea of a bigger intercooler to keep the incoming air cooler but don't want to overstress the engine with extra boost etc.
The question is...do i fit a bigger intercooler(just to be on the safe side) and readjust the boost to the "nomimal" limit or i have to go from the beggining - new remap,booster box,boost over 19 psi?

Sure will make a difference - we have extensively modified my mates Defender over time with remap, exhaust etc, etc and the last thing was a larger cooler. We both noticed the performance increase immediately and his EGT gauge shows far lower temps driving the same road pulling his trailer. I've monitored all engine parameters via Nanocom and can confirm. A larger cooler - with remap, EGR mod, exhaust mods and silicon hoses WILL increase the performance and put a smile on your dial :-))

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