the many more 4AGZE questions topic

[ditn]

since i have alot of questions(again),i hope to collect them in this topic

exhaust system:
what system would be the best for a 4AGZE?
(for zolder i need to stay under 95db)
I was thinking a janspeed exhaust system with 2 1/4,2 1/2 diameter?
I have a 4-1 janspeed manifold

intercooler+ piping.
? inch from air filter to the sc
2? inch piping after sc to intercooler and to the manifold
what would be the best size for the intercooler,im having trouble finding it out.

engine
I want to do the same like hks did with there supercharger kit for the 4AGE
instead of pushing the boost up with other pulleys and abv mod,...
i want to make the cr a bit higher and maintain all oem parts.
Now i have 8,9 , how high could i go safely 9,5?
the trd radiator cap,is it an improvement or will it do more harm then good?
can i use 4AGE headgasket,other gaskets for the 4AGZE?

And a local question
how much can i expect the cost to be for a vems ecu+loom+tuning from dp-engineering?

more to come ...