Thread: 2.2 Puma Defender Fuel Economy

Originally Posted by martnH

Then bad idea to lug the engine on highway

Get a diagnostic tool and monitor engine load and temperature. (Oil temp I believe in 2.2?) And also egt.

My 2.2 puma really don't like high way driving. Egt will approach 500c if rev is too low

500c before or after turbo?

Originally Posted by 1nando

500c before or after turbo?

After

Originally Posted by Beery

I agree, they (including the 2.2) are definitely designed to do their best work in that rev range.
I tend to be fairly gentle with mine under 2000rpm.

2.2 Puma, 2000-2500 cruising is sweet...economy and all. ...but the real sweet spot is 2,500-3,000rpm. 3,500 if necessary It’s no V8 but there is a puma growl under there.

...by the way, in the absence of a redline on the tacho, any thoughts?

Originally Posted by martnH

After

500 post turbo on the high way seems high to me. How are u getting the reading? Actual egt probe and gauge or computer reading through some scaning gauge?

Mine was on 33s, heavy and extremely modified and i never managed more than 620 pre turbo. To get that result i had to floor it up a hill for a prolonged time in 6th gear with the family on board, fully loaded and on a extremely hot day.
500 post turbo would worry me as this could quiet easily be 700+ pre turbo!

Originally Posted by 1nando

500 post turbo on the high way seems high to me. How are u getting the reading? Actual egt probe and gauge or computer reading through some scaning gauge?

Mine was on 33s, heavy and extremely modified and i never managed more than 620 pre turbo. To get that result i had to floor it up a hill for a prolonged time in 6th gear with the family on board, fully loaded and on a extremely hot day.
500 post turbo would worry me as this could quiet easily be 700+ pre turbo!

110km/h climbing a hill
6th gear and 2500 rev.....


Does it sound too high? I use an actual egt probe

Originally Posted by martnH

110km/h climbing a hill
6th gear and 2500 rev.....


Does it sound too high? I use an actual egt probe

What atmo temp?
Loaded or unloaded?
Foot to the floor or mainting speed?
What coolant temps are you getting at 500 egt?

500 sounds high post turbo to me. I did an egt experiment over the course of a year and found the following with my 2.2:

Now mine had a alive tune and cooler.
Take home notes;
-Stock exhaust is restrictive especially cat and centre muffler
-Better intercooler is great idea
-Remap is a good idea
- air con increases egts
- bigger rubber increases egts as well as fuel consumption
- coolant temp reflects egts under prolonged foot to the floor action. In other words higher engine load causes coolant temp to rise.

Never ever went higher than 620 pre turbo and economy was 12.75 ltrs/100 combined average

Have a read through

Puma 2.2 Egt's

Originally Posted by Zeros

2.2 Puma, 2000-2500 cruising is sweet...economy and all. ...but the real sweet spot is 2,500-3,000rpm. 3,500 if necessary It’s no V8 but there is a puma growl under there.

...by the way, in the absence of a redline on the tacho, any thoughts?

Yes, for economy it's 2000-2500, but for grunt it's 2500-3500, and there is a growl!
I should say mine has a Steinbauer chip, so it might be slightly better than standard.