Cooler Swap & No Retune Test = Dyno Results

[IH8TOADS]

If I'm reading this correctly it looks like your putting out about 80 or 90 kw at 3000 rpm? That is really low.

[Saski]

Looks normal to me.

Can always be tuned to come on earlier and harder but that it not my preference. I had asked my tuner to keep it factoryish down low. Current tune is good on the rest of the driveline too.

Its a mild tune is good enough for 12's on street tyres

[bandblightfoot]

Just installed pw stage 2 intercooler and piping kit. Just trying to find time to get it tuned if I take it easy driving is the car going to be fine for a week.

[Kroozin]

Yep

[ms700]

Report back here if its not....

[camo86T]

A query from a forum newbie/mechanical dunce ... I have an early FG ute, manual, was tuned about 2.5yrs ago with x-force 4" dump, 5" cat into twin 2.5", capa flash, new injectors (can't remember size) and growler intake... that's about it I think. made 345rwkw (on a hub dyno), went back 6 months later for a tweak, made 375rwkw and 920nm... on hub dyno again, guessing with traction issues taken out that equates to about 330-350 on a roller dyno...? Cos I'm a tightarse, I left the cooler as stock.

Obviously in summer power drops like a turd, especially when its humid... winter mornings it goes like stink.

Here's the question; if I throw on one of those cheapo ebay cooler - 460x430x85mm max thickness (stepped) and don't re-tune, whats the worst that could happen??

[senna_T]

Depends on how the car was tuned and what safety measures are left in place. There is a good chance that your car will boost a bit harder but no guarantee either way.

The factory ecu is smart enough to pull back the timing to try and save things going bad but then the car will just feel slower than before.

best bet is to get a decent quality cooler kit and get it re-tuned. Do it once and do it right

[camo86T]

Ok... lets see if I can get my little dunce cap around this.

What difference is there between a cold morning... and making the intake air a bit cooler/denser with ebay jobbie cooler?

Obviously I don't get the car re-tuned in winter, and ECU handles the colder air, and power increases to whatever it makes then without a hassle.

Is the extra flow the difference...? Or am I missing something else?

Please help, tech people!!

[senna_T]

You're on the right path mate, the larger intercooler will increase the amount of air flow and increase the efficiency of the system. This may allow the motor to rev up quicker and increase the load on the wastegate actuator.

All this can lead to overboosting and detonation.

After all that doom and gloom you may find that nothing at all happens and it will be perfectly fine. I'd still recommend getting the vehicle tuned with the cooler kit, this way the guy tuning your car isn't working around a problem (high intake temps) and the result will be much better

[camo86T]

Cheers!