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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old January 24th, 2020, 10:23   #1
prestipresse
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Default Q5 cold air intake upgrade!

Q5 Tdi upgrade air intake or not?
Hi everyone,
I ‘ve had my oem turbo rebuilted: billet, bearings, ..., egr, swirl flap and Add blue delete. New down pipe, cat less. Stage 4 tuning with 4 bar map sensor.
Right now, my turbo is pushing 35 psi.I might have around 300whp, will confirm in the spring with a dyno!
I really need more air for the turbo, suggestion from Tuner!
I want to built my own cold air intake, because it kills me to pay 1000$ for apr cold air intake!
And the opening beside the turbo is so small! I was thinking to fit the SQ5 TDI, it’s much larger then mine, but not sure it will fit!
Do you have any suggestions?
Thanks!
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Old January 24th, 2020, 12:29   #2
Yourbuddysatin
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They come factory with a great intake....
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Old January 24th, 2020, 15:42   #3
adjat84th
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Assuming you have the 2.0 and SQ5 is 3.0? The stock elbow is fairly tiny at the end that meets the turbo at least on my 2.0. Stock is 41mm (I'm sure it's different but maybe similar) on the elbow inside diameter. What I have now matches the inlet on the 2260 turbo while retaining stock airbox. Has to help at least a little bit I'd imagine. My measurements tell me I gained 10mm just by eliminating that elbow...again, retaining the stock airbox.

How about an intercooler upgrade, would help a lot as well I'd imagine.
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Old January 24th, 2020, 16:16   #4
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Pretty sure all the Q5's got the 3L V6. I think the only Audi that got the 2L (over here anyhow)was the A3.
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Old January 24th, 2020, 16:32   #5
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I guess I could have deduced that from the 35psi mention..whoops. Still think there is merritt to increasing intake size to at least match the compressor inlet though.
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Old January 24th, 2020, 17:10   #6
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"Still think there is merritt" to increasing intake size to at least match the compressor inlet though." Adjat

I'll go along with that, I've got a PD150 airbox with bigger MAF going on
my ALH soon, cleaning up the plumbing to the turbo, and larger diameter,
has got to help IMO.
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Old January 25th, 2020, 09:33   #7
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Yes I have a Q5 3.0L V6 TDI.
I will mesure the inside of the turbo and of the inlet of the turbo!
I thought the intercooler on the Q5 is large enough!
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Old January 25th, 2020, 13:17   #8
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I run the Q5 with gtb2565 and stock intake, 2.4 bar boost 360+ hp , stock intake is perfect.
Big frontal IC surely helps keeping IAT down.

My friend with similar setup runs 400+hp and no need for expensive air intake. He's got probably the fastest Q5 there is 100-200 under 12seconds
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Old January 26th, 2020, 05:37   #9
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Quote:
Originally Posted by prestipresse View Post
Q5 Tdi upgrade air intake or not?
Doing so is NOT and upgrade. It's a downgrade. Hp and engine and turbo killer. Please look at the cold air intakes sticky.

Dont want to match the intake port on the turbo air speed velocity vs CFM. The turbo is doing a fine job as is.
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Old January 30th, 2020, 13:37   #10
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Quote:
Originally Posted by Macradiators.com View Post
I run the Q5 with gtb2565 and stock intake, 2.4 bar boost 360+ hp , stock intake is perfect.
Big frontal IC surely helps keeping IAT down.

My friend with similar setup runs 400+hp and no need for expensive air intake. He's got probably the fastest Q5 there is 100-200 under 12seconds
Hi Macradiators,
Can you tell me what brand and size of IC that is on your Q5?
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Old February 1st, 2020, 12:58   #11
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Its something made locally, 700x 300 x70mm tube&fin technology. Awesome and under 150euro here from factory.
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