Hi all,
At the moment my car has few mods being as follows:
1. blitz return flow cooler
2. K&N drop in panel filter
3. Excedy HD clutch
4. boosted 1 bar
It also came with an Impul tuned ECU and Nismo VSS muffler.
After searching for what type of exhaust I will need etc, I have decided to change the exhaust system to a 3". However, I want to keep the Nismo muffler, and change the dump/front/cat-back (if that can be done with the VSS).
Does anyone know if the VSS muffler (silent/sports mode) is particularly restrictive? Or whether it would even matter as its at the end of the exhaust?
If people dont know the muffler i'm talking about it can be found here:
http://www.skylinesa..._1#entry5322488
and here:
http://www.skylinesa..._1#entry2851890
Also, once I have changed the exhaust the car will most likely need a tune. Does anyone know if the Impul chip can be tuned? I am pretty sure the car came with both the chip and muffler from factory.
Thanks for your help in advance.