Hey Guys,
I need your help...
In Jan of this year, I had my stock R34 (auto) dynoed. Output was 134 kw at the wheels. Seemed pretty standard. Today I had it dynoed again to find out what gains have been achieved after the following mods:
HKS dump pipe ($576)
HKS front pipe ($300+)
High Flow Cat ($200+)
3.5 HKS Cat Back ($900 second hand)
K&N panel filter ($126)
Turbosmart Dual Stage Boost Controller ($270+)
The result...nil gains at all.
We were trying to come up with the optimum boost setting. The stock boost reading on the dyno indicated between approx 6.9 to 7.2 psi. Air fuel mixture read 10.0. When the boost was increased to 8 psi, power suddenly dropped to less than 100 kw. I've spent close to $2,500 so far.
Could someone please point me in the right direction. What could have gone wrong?