fallwood

I currently control my boost with a greddy boost controller, works well apart from when there are air temperature changes, on a cold night I am seeing upto 1psi increase in boost and likewise on a hot day boost can drop by 1psi, would having a tek3 map control the boost better and keep it at the same level irespective of changes in air temperature. I want to run about 19psi of boost but dont want to go over incase I cause any damage, having to fiddle with the controller all the time is P***ing me off.

p1prodrive

iTrader: (3)

if it is fluctuating in weather with your controller iam sure it will do the same when mapped to a max boost level !

(but then what do i know..lol)

fallwood

So is it best to set boost when air temps are at their coldest and just leave it at that, just want to keep it safe and avoid overboosting.

Brun

Mine flutuates with the weather - with a tek3

p1prodrive

iTrader: (3)

if your that botherd, in the winter set the boost 1psi less for insstance
and in the summer put it up 1psi.

fallwood

So lets say I go get my car remapped and its the middle of summer , its a warm day with air temps at about 25c , its determined that its safe to set boost at 19psi and map is done accordingly, winter arrives and boost has gone up to 20psi+ , is it still safe. What kind of fluctuations are people experiencing .

fallwood

I wouldnt mind if It was that clear cut, for example it was fairly cold on tuesday night (12c according to outside temp gauge) and was boosting to 19.7psi wot in 4th so I knocked it down a bit, went out wednesday morning and wot in 4th it was only boosting to just over 18 so turned it back up again, would like to be able to set and forget but still get max boost all the time, I assumed that the tek3 did this to keep everything nice and safe which would be my main reason for getting it done.

Brun

On a very hot day i can sometimes only achieve a 1.3 bar peak and on a lovely cool, moist morning 1.5 is the new target. By my figures - my Tek3 varies almost 3psi depending on weather

fallwood

So I'd be no better off as to how the boost is controlled , think ill wait till the depths of winter and set boost then leave it.

RON

I could be daft, but isn't it better to remap in the summer, cos that way, you'd be mapped for hot(ish) weather, and therefore higher inlet temps, so that when the weather gets cold(er) the boost and ignition etc would be safer..?? surely if you map in the winter the boost settings in the summer might be too much???

fallwood

Boost drops in hot weather.

RON

As a result of higher inlet temps and a few other things.... still confused....

fallwood

Higher inlet temps mean the air is not as dense, turbo has to work harder to acheive boost.

p1prodrive

iTrader: (3)

RON - you took the words right out of my mouth

fallwood

Yes it is safer to get a map done in summer as there is more chance of detonation with high inlet temps, I am only refering to setting the boost level, as I know the car runs ok at 19psi in the summer it will definately run ok at 19psi in the winter, what I am saying is that boost will increase in the winter due to the air being denser and im not sure if its ok to run with an extra psi.