I have a vrs octavia 2.0 tfsi which has been remaped, but today it seemed to be running slow and had a lack of punch which it normally has, is this do to the hot humid weather and/ or is anybody else having this problem???

Yeah 30 or so degrees aint going to help.

Intake temps are probably too high, so it's pulling timing back.

I have the same problem with my Astra, as the intercooler is between the aircon and water radiators - when the ambient air temp gets above about 22C and the aircon is on, the charge temperature gets too high.

Mine is extremely sensitive to the heat.

If I fancy a drive I'll wait till around 10PM. It's like driving a totally different car when its cooler out.

Agree with Harry there mines the same.When working at night all is ok.

i think i mentioned this the other day as its the first summer ive actually really noticed a difference and thought it might have been change of fuel (from shell to tesco).

perhaps making an air con unit or air cooler to cool the air going into the air intake might help (or a project for someone to try)

My tdi have the same behavior when travelling to n-ring was verry slow and lazy compare to his good days. I am blaming the high temperature of air because here in Ireland the car it's working at normal power.

It's taken a while, but I've finally found a good point about the f***ing baltic weather up here. No waiting for night time for me!!

i think i mentioned this the other day as its the first summer ive actually really noticed a difference and thought it might have been change of fuel (from shell to tesco).

perhaps making an air con unit or air cooler to cool the air going into the air intake might help (or a project for someone to try)

Pretty pointless as the AC saps power from the engine to operate, but in theory I guess it would work.

Pretty pointless as the AC saps power from the engine to operate, but in theory I guess it would work.

Harry its an idea perhaps someone could work on. I've heard of putting a frozen bottle of water in front of a house fan makes it cooler in the room, maybe a frozen bottle of water somehow?? ok wont last more than a couple of hours (remembering back to when we use to take frozen bottles of drink to school so they be cool enough still by lunchtime).

Another one maybe a pipe from inside the car to the air intake and blow A/C air to it???

As said im sure its an idea that could be worked on?

Shouldn't be too much of a problem, unless you have an aftermarket air intake, as the OE airbox has a very good direct from the outside cold air supply.

However, 30 deg C WILL slow anyone up due to the hotter, thinner air.

Need to compensate for hotter air by cooling intake temps down in other ways - FMIC, water injection, nitrous. A few pretty expensive options to counter the heat.

i did think nos, but that is something that stays in the system well after its turned off so someone was saying to me today. would water injection work on petrol??? not that i personally think it would.

You all need one of these:

APR - High Performance Development for Volkswagen Vehicles

On the hottest days I noticed this issue only slightly on the standard IC tbh. Saying that though, some cars are far worse when standard. Dont even ask how the MK1 Octy 4x4 was running the standard SMIC in the hot weather!

Lee

Would be nice but not for £800+ fitting :eek:

You need a better intercooler, or if you don't have one, a cold air intake can do well. If you do have an intercooler you can do like Subaru does on the WRC and spray water on it when hot.

Would be nice but not for £800+ fitting :eek:

anyone up for a cheap chav mod of it?

Super Soaker and some cable ties, Robert is your mother's brother.

:confused:

Our ERV decided that it didn't want to go about 55 on Tuesday when the temperature reached 32.5'c, which is fine until you stick the nee naw stuff on and try and overtake traffic...

I've ran my 1.6 FSI at 50Celsius up to 170 kmh with no problems. In fact, I traveled over 100kms at above 150 no problem. Could have gone like that all day, I just got to the destination.

For the record, the car's temp display is usually accurate within a degree from both Yahoo weather and the local weather broadcasts.