Quote:
Originally Posted by johanness
I've always been under the assumption that a direct port system is a much better option, and you avoid certain cylinders running leaner than others. You can tune much more reliably as a result.
It means tapping into that lovely intake manifold of yours, however once it's done, it's done.
Example:
$0.02 |
its reaaaalllyy not that simple ;-)
yeah this way is great but it changes the ball game... when you inject meth mixed with water this close to the intake i.e AT the manifold your using it as fuel..... when you use it as fuel you need a tune that takes account of that... when you need a tune to take account of the meth you always have to run meth, so if your running at WOT on a meth dependant tune, and say the meth runs out, or the pump fails you engine will most like det to fuck and blow.....
the way we use meth/water is to spray well away from the intake so by the time its got to the intake mani all is doing is cooling charge... this way we dont need any new tune, its till the stock s/c tune but the ecu is seeing a icey cool intake charge giving up more time and more power/Tq... if out meth tank runs dry??? no probs the car just carries on as normal..... so basically for us intercooled guys its like running in 5 deg c chilly winters yet in reality the outside temp could be 30 deg C.....
meth dependant tunes are a complete ballache...... so theirs 2 ways, the cooling charge temp way... or using it as a fuel suppliment...... using it as a charge cooler is a simply bolt in job.........tuning for meth is great on a race car or a car that can switch tunes but on a single tune car.... its way to risky imo..... To use meth as a charge cooler not a fuel you need an Air to Air intercooler.....you need to spray as far from the intake manifold as possible on the outlet side of the intercooler......it also jet steams your engine internals and keep them superclean as bythe time its reached the intake is just vapour....