Ok I got a G35. Im trying to get everylast detail about the Vortec kit.. Now if you know what the front bumper looks like you would notice that where the intercooler would be there is no opening in the bumper for air to pass. How much of a problem is this? Im still waiting for a good new front bumper to come out with a wide mouth.. But no such luck right now. Now if its not that much of a problem when I do add a good bumper will the tune on the car change forcing me to get it retuned?

Thanx guys..

 

The quick answer is no you will not have to retune it, if you get a new front end. Because when you get it tuned the shop should know not to tune it while it's heat soaked.

The reason why. Basically the Intercooler is more of a heat storage unit. When you boost it does not cool off right away, when you boost you put in energy (as heat) and air slowly takes away that energy. So in your case the energy will be removed slower. The net effect you will have is that your intercooler will not dump as much heat back into the air and will heat soak quicker.

If you put a thermometer in the intake after the I/C you would see the air temp go down when you first get in boost due to the higher flow and pressure increases heat transfer from the air to the I/C. then it will slowly rise as the I/C warms up. Once you let off boost the temp will stay high as the heat from the I/C is bled into the now cooler air in the intake compared to I/C. So off boost the intake air as well as outside air flow cools the I/C making room for the next boost/heat cycle. That’s also why if you plan to run top speed runs you need to tune a lot safer than a normal "street tune" due to the heat soak due the longer boost event.
Gary

 

Nice!!! Thanx for that. It was just what i needed to know!

 

You might also think about possible making some ducting work around open parts around the outside of the intercooler and duct that air into the middle thru the intercooler or if you wanna get fancy there are some good plans online to make a basic boost dependant intercooler water sprayer which can help with the heat soak/efficiency of the IC.

 

I will get a new front bumper shortly after install..