I just installed a SPI boost gauge in my car and at light trothle it jumps to zero then boost increases as I hit the trothle....But wen the car is crusing at steady velocity the boost goes down -20 or 25..
1)Does this mean that the Turbos are not been used?
Is this normal...Seems it only mesures PSI presure when the trottle is used otherwise it drops....
2) The second thing I want to know is if 15 PSI is normal for BCC, Downpipe and Exhaust...I though is a little high I was expecting like 13 top but my Auto is spiking at 15....
????????Is there is gong to be a lot more difference when get my EBC and go to 18?????????. Seems that I might be expending $300 for 3 PSI only Is it Woth it?
What about the 15 PSI and the difference that 18 PSI will do, Is it worth $300 for 3 PSI more(EBC)..Since my car is running 15 right now without it!!!!!!!!