i plan on making my own intake manifold.i was thinking if i need the EGR or IACV valve?is it necessary?
nope, just dont plan on passing emissions after
emissions.who cares hahah
anyways here is a intake manifold i made for my sentra.never had a chance to test it till i had a accident =(
it will look similar to that except it will have weber v stacks
think you should probably keep iacv but you can definitely get rid of egr if you want. you can still pass etest legit without egr…i did it last month.
does anyone know why that guy on ka-t didn’t use the lower manifold.is it because he running boost?
the intake you make to weld to the upper is essentially replacing your lower mani. iirc, you’re basically replacing your initial intake runners (lower mani) with a plenum that feeds your upper runners. this will affect the shape of your power band.
so what would be a better choice power wise? A:with out the lower mainfold
or B:with the lower manifold
“Xcessive Manufacturing’s intake manifold for the KA24DE motor (RWD) is designed to take advantage of the factory high port/runner design and dramatically increase flow for boosted motors or N/A motors looking for more mid to high rpm power.”
On an NA KA, you’ll only really feel a shift in the curve. As it says above, if you take out the lower and replace with a plenum, this offsets your curve a bi t higher in the rpm range. Also, if you do go with the plenum, you might want to consider cams, ecu, etc if you really want to get the most out of it on NA. Can’t personally say whether or not it’s worth it but most 240 guys just stick with boost. If you’re looking for response then go for this option but don’t expect miracles for power. And if you’re going more towards the ITB route with your Weber stacks, with a tune, expect to get some rotating masses re-balanced depending on how far you push things.
If it’s your daily, I’d say keep the lower and invest $$$ elsewhere.
going with out the lower manifold runners.going to use this for now without tuning and see how it turns out.once i got turbo i will tune it.thanks