What did you do to your Polo today?

**sambb** · 12-01-2016, 12:02 PM

Blue9N3 What were you boosting to pre and post intercooler swap?

sam

**HAR80N** · 12-01-2016, 04:41 PM

new goodies hehehe

**Blue9N3** · 12-01-2016, 09:59 PM

Originally Posted by sambb

Blue9N3 What were you boosting to pre and post intercooler swap?

sam

19psi tailing off to 16psi or so, why? No change before and after. Just smoother onto boost / slower feeling!

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**h100vw** · 13-01-2016, 09:06 AM

Originally Posted by sambb

Blue9N3 What were you boosting to pre and post intercooler swap?

sam

Pressure drop across the intercooler is what's important. Not the pre and post fit pressure in the manifold. If the pressure drop was higher than std sidemount. The ECU would drive the turbo harder to compensate, creating heat and reducing performance.

**sambb** · 13-01-2016, 01:46 PM

Yeah that's what I was curious about - whether the smoother spool up was actually due to a pressure drop, but now I see what you mean Gav. You wouldn't see a pressure drop at the MAP sensor would you because it'll just be spinning the turbo harder. You'd need a pre intercooler gauge too really see whats going on wouldn't you.
I 'spose the smoother spool up could be due to a bit of delay due to longer pipe work?

**Blue9N3** · 13-01-2016, 11:12 PM

There is a lot more pipe work ....

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**Blue9N3** · 14-01-2016, 10:21 AM

And from a bit more driving, it's just a bit more lag. Car definitely feels better than you thrash it. (Chances to do that have been rather slim as I usually only drive in rush hour....)

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**SuperChimps** · 17-01-2016, 08:56 PM

I did my intercooler today as well. Should have been a lot easier than it was, but I have the old sexy fingers.. everything I touch is f**ed. Still its on now (and fingers crossed no piping comes off on the way to work tomorrow!).

I did one quick test around the block and it seemed ok - no more or less lag than usual... but it'll take a bit more driving until I really notice it I guess. I did think perhaps my boost was a little down - usually 4th gets me about 17 - 18 psi, but it looked like it was peaking today at 15. Too early to tell though. Hopefully its cooling effects outweigh any slight loss of boost (if that's even a real observation).

that's about it now for the car, until I get a massive raise and can buy some coilovers