Tweet
Did some testing, my intake air temp readings I'm seeing are actually post cooler, so I'm not too happy with it, even if it is by design as the car is happy.
I will be combating the issue in a few ways in the near future.
1. I will be installing a new intake, this will likely make absolutely no difference to temperatures or performance, purely just for acoustics. It's a cheap universal one off ebay which I will modify for use on the polo.
2. Venting the bonnet. I'll be installing a large vent around the middle to the front of the bonnet to promote hot air to escape from the under the bonnet. This will also reduce the pressure differential between the front and back of the radiator, which will mean a more effective radiator, and theoretically, also an improvement in aero.
3. Meth/water is unlikely, will outline below as to why. I am looking more into a water spray for the heat exchanger. I have heard good things about the effectiveness of these sprayers. I have bought some misting nozzles and I'll couple that with a high pressure pump and see what the results are. I have no idea what to expect, but theory would suggest a reduction in iat.
I've chosen against meth injection for a couple of reasons. Firstly, it is rather complicated, and whilst doable, there is a lot of wiring, tee-ing and sensors to plumb in. Secondly and probably the biggest factor, is the design of the intake system. The charge air pipe is a non standard piece of plastic with no real flat surface which really limits the chance of a nozzle having a good seal when installed.
Pre turbo injection is quite a bit easier, however there's a lot of info to suggest that unless the mixture is properly atomised, there is a great chance that it can damage the blades of the compressor housing. Not worth the risk.
The cool thing is that these modifications are quite inexpensive and will put less stress on the engine for a given target, not a lot to lose.
I will be combating the issue in a few ways in the near future.
1. I will be installing a new intake, this will likely make absolutely no difference to temperatures or performance, purely just for acoustics. It's a cheap universal one off ebay which I will modify for use on the polo.
2. Venting the bonnet. I'll be installing a large vent around the middle to the front of the bonnet to promote hot air to escape from the under the bonnet. This will also reduce the pressure differential between the front and back of the radiator, which will mean a more effective radiator, and theoretically, also an improvement in aero.
3. Meth/water is unlikely, will outline below as to why. I am looking more into a water spray for the heat exchanger. I have heard good things about the effectiveness of these sprayers. I have bought some misting nozzles and I'll couple that with a high pressure pump and see what the results are. I have no idea what to expect, but theory would suggest a reduction in iat.
I've chosen against meth injection for a couple of reasons. Firstly, it is rather complicated, and whilst doable, there is a lot of wiring, tee-ing and sensors to plumb in. Secondly and probably the biggest factor, is the design of the intake system. The charge air pipe is a non standard piece of plastic with no real flat surface which really limits the chance of a nozzle having a good seal when installed.
Pre turbo injection is quite a bit easier, however there's a lot of info to suggest that unless the mixture is properly atomised, there is a great chance that it can damage the blades of the compressor housing. Not worth the risk.
The cool thing is that these modifications are quite inexpensive and will put less stress on the engine for a given target, not a lot to lose.
Comment