MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Tazgti5 on July 27, 2014, 06:49:54 pm

Title: Hot weather effecting performance?
Post by: Tazgti5 on July 27, 2014, 06:49:54 pm

Hi guys just wondering if any one else sufferers from sluggish performance in hot weather

Title: Re: Hot weather effecting performance?
Post by: rich83 on July 27, 2014, 07:08:16 pm

Yep. High intake temps mean lower power output.

Title: Re: Hot weather effecting performance?
Post by: bacillus on July 27, 2014, 07:14:55 pm

http://www.mk5golfgti.co.uk/forum/index.php/topic,86253.0.html

Title: Re: Hot weather effecting performance?
Post by: Tazgti5 on July 27, 2014, 07:20:37 pm

Today the weather being a bit cooler made a a lot of difference the car felt a lot smoother and effortless to drive

Title: Re: Hot weather effecting performance?
Post by: TForrest94 on July 27, 2014, 11:06:36 pm

Hot air is a barstewards with turbos, spring and autumn have ideal conditions I find in the late morning or early evenings when it's nice and cool but roads are still dry

Title: Re: Hot weather effecting performance?
Post by: GrayMK5GTI on July 28, 2014, 01:27:08 pm

Quote from: TForrest94 on July 27, 2014, 11:06:36 pm

Hot air is a barstewards with turbos, spring and autumn have ideal conditions I find in the late morning or early evenings when it's nice and cool but roads are still dry

Hot weather affects N/A cars too.

WMI and a decent intercooler make all the difference apparently

Title: Re: Hot weather effecting performance?
Post by: Dave7692 on July 28, 2014, 01:32:17 pm

I don't think my TDI is suffering too much, although I guess it depends whether your intake is a sealed standard jobby or one thats open to the heat of the engine bay.

Title: Re: Hot weather effecting performance?
Post by: Matto on July 28, 2014, 01:40:41 pm

Quote from: Dave7692 on July 28, 2014, 01:32:17 pm

I don't think my TDI is suffering too much, although I guess it depends whether your intake is a sealed standard jobby or one thats open to the heat of the engine bay.

I have noticed my TDI is a little less responsive when the weather is hot. Not massively but enough to notice. I was seeing intake temps of 40+ degrees last week with standard enclosed airbox.

Title: Re: Hot weather effecting performance?
Post by: ED30 Fish on July 28, 2014, 05:31:06 pm

Cold air is more dense therefore contains more gsm (air mass) for the same flow amount vs hot air...

More air mass + more fuel matched by the ecu = more power. This applied to all combustion engines, turbo and N/A.

Title: Re: Hot weather effecting performance?
Post by: Hurdy on July 28, 2014, 07:41:49 pm

I just turn my boost up!  :wink:

Seriously though, my R handles the hot weather much better than I thought it would.

Title: Re: Hot weather effecting performance?
Post by: greygti on July 28, 2014, 10:12:39 pm

What cooler do you run hurdy ??

Title: Re: Hot weather effecting performance?
Post by: rich83 on July 29, 2014, 12:44:29 am

Quote from: greygti on July 28, 2014, 10:12:39 pm

What cooler do you run hurdy ??

Hurdy has eurojet and WMI.