disappointed in the aftermarket

[car_buff]

Originally Posted by Focus_Sh1ft

This baffles me. What is the right way? Buy every bolt on performance part for maybe a 10 hp gain cumulative?

I agree the aftermarket is barely there. However, and feel free to call me narrow-minded, but if you want appreciable performance you have to get forced induction. I spent over a grand in bolt-ons before I realized I still had no chance of keeping up with soccer moms.

the right way is going all the way to the engine block, none of this axleback exhaust shenanigans, or these so cold cold air or short ram intakes that connect to the stock tb and manifold. none of those are fixing the problem, a restrictive intake manifold and cat. I intend to through it all away, the entirety of both whole systems, and replace them. the exhaust will be easier, so long as I can find a high flow cat in 2.25 diameter, because I'll be using generic prefabbed mandril bent steel, a cheap pair of used headers (depending upon the find I'd like dc's or megans, but nobody seems to be willing to part with theres unless theyve upgraded to a turbo, which is not super common) or possibly those ebay cheapies, although I'd rather not, a few of them look hardly better than a polished version of the oem manifold.

the intake is going to be troublesome, as it has several thing's attached to I don't even know what they are for. MAFS would be easy enough to relocate, but there's some rubberized hose attached to it as well, and I dunno what it's for, how it works, and how what I have in mind will effect it, even if I make a replica connection to my intake manifold. is the increased air flow going to effect whatever that thing is, and and if so, negatively or positively? for anyone willing to give a shout out...



ps. anyone know the diameter of the 1.5l tb and the 1.8l tb off the top of their heads?

btw, an example of what a real intake looks like, though a bit too much tube for my taste. i'm going to try to have them go straight down to a collector (ie throttlebody) with a wide mouth scoop under the radiator to pull off legit ram air intake mani. should be fun.

[Focus_Sh1ft]

^ That's one of the PCV hoses. On my setup, I have that line going to an oil catch can, then back to the manifold.

I commend you for your willingness to make your own intake manifold, but can only wonder if it will be worth it. On NA, I doubt that it's as big of a restriction as you're making it out to be.

Btw, dunno the TB diameters, but I can tell you the 1ZZ compared to the 1NZ is a huge difference. Nearly double in size.

[YarisPR]

Originally Posted by car_buff

The only air going in my IM (oem) is the one coming from the CAI, the other hoses are gone

[xnamerxx]

Originally Posted by car_buff

the right way is going all the way to the engine block, none of this axleback exhaust shenanigans, or these so cold cold air or short ram intakes that connect to the stock tb and manifold. none of those are fixing the problem, a restrictive intake manifold and cat. I intend to through it all away, the entirety of both whole systems, and replace them. the exhaust will be easier, so long as I can find a high flow cat in 2.25 diameter, because I'll be using generic prefabbed mandril bent steel, a cheap pair of used headers (depending upon the find I'd like dc's or megans, but nobody seems to be willing to part with theres unless theyve upgraded to a turbo, which is not super common) or possibly those ebay cheapies, although I'd rather not, a few of them look hardly better than a polished version of the oem manifold.

the intake is going to be troublesome, as it has several thing's attached to I don't even know what they are for. MAFS would be easy enough to relocate, but there's some rubberized hose attached to it as well, and I dunno what it's for, how it works, and how what I have in mind will effect it, even if I make a replica connection to my intake manifold. is the increased air flow going to effect whatever that thing is, and and if so, negatively or positively? for anyone willing to give a shout out...



ps. anyone know the diameter of the 1.5l tb and the 1.8l tb off the top of their heads?

btw, an example of what a real intake looks like, though a bit too much tube for my taste. i'm going to try to have them go straight down to a collector (ie throttlebody) with a wide mouth scoop under the radiator to pull off legit ram air intake mani. should be fun.

I have to ask this question, if you don't know what your looking at on the engine how do you feel comfortable enough in tearing it apart?