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View Full Version : Parts needed to change my HFS-4 install to port injection


MethoD
10-10-2016, 06:18 PM
I currently have my HFS-4 installed in my car with three nozzles mounted in the intake piping just after the intercooler. I inject 100% methanol. I want to change over to port injected and install a nozzle into each intake runner. I anticipate using the 4 x 260cc nozzles.

I prefer not to have to relocate my FAV/flow sensor assembly. While it was only a few inches away from the intercooler pipe, it will end up requiring about 2~3 feet of piping to reach the hex manifold.

My questions are:

1) Is that too long of a run from the FAV/flow sensor to the hex manifold? If so, if I used 6mm tubing for that run, would that be better? Keep in mind I have the tank/pump located in the front of my car (Toyota MR2) so there is several feet of 6mm piping between the pump and FAV.

2) Is there any benefit to retaining one small-ish nozzle in the intake piping after the intercooler?

Thank you

Richard L
23-10-2016, 07:03 AM
The run length between the fav and the hex manifold is not critical as longer as you have a checkvalve in between the charge pipe jet and the hex manifold.

For sure, great benefit to add a small post-IC jet.

Here is an example of a intertrated FAV/Hex M.
http://www.corvetteforum.com/forums/c6-forced-induction-nitrous/3787274-c6-aquamist-direct-port-meth-kit-came-in.html