[4doorbmwpower]

is there any specific reason why we have left the Stock intake manifold and throttle body alone?

i wanna build a new setup. With a larger throttle body and possibly aluminum intake manifold.

will go nice with my other side projects but is there a reason not ONE SINGLE company has done this? the benefits of having a larger throttle body so the charge pipe doesnt have to neck down is obvious when we have cars running over 20psi... so why hasnt it been done?

[Ingeniator]

Originally Posted by 4doorbmwpower

is there any specific reason why we have left the Stock intake manifold and throttle body alone?

i wanna build a new setup. With a larger throttle body and possibly aluminum intake manifold.

will go nice with my other side projects but is there a reason not ONE SINGLE company has done this? the benefits of having a larger throttle body so the charge pipe doesnt have to neck down is obvious when we have cars running over 20psi... so why hasnt it been done?

My main bet is throttle control. Manifold plenum flows alright and no viable replacement for the throttle body. I'm working on some stuff to try and convert to allow for a mustang 90mm. No benefit for stock/hybrid turbos though it would be single only as your already making custom charge pipes.

[Miller335]

Not sure but my assumption is that being FI there's not much gains to be had so focus is elsewhere in the community.

I'm sure if this was an NA setup it would have been explored.

[CHECKERED]

Originally Posted by 4doorbmwpower

is there any specific reason why we have left the Stock intake manifold and throttle body alone?

i wanna build a new setup. With a larger throttle body and possibly aluminum intake manifold.

will go nice with my other side projects but is there a reason not ONE SINGLE company has done this? the benefits of having a larger throttle body so the charge pipe doesnt have to neck down is obvious when we have cars running over 20psi... so why hasnt it been done?

Because turbo,

Gains from TB and intake manifold usually happen with big displacement N/A engines.

On a boosted application since air is already being forced into the engine, on the hot (boosted) side of intake system there are very little gains to be made…sure you can spend $1,000 on an aftermarket TB, + 2,000 on a manifold and get maybe 10hp, its just not worth it.
I mean look at people with charge pipes, you would think a smooth gentle curving CP will provide even a few gains, but you get nothing over stock.

[135Pats]

People have looked into manifold revisions extensively. Kaizen speed is the only company that's gone beyond 3d renderings and even that was a prototype.

It's extremely difficult to feed certain cylinders. I had no idea it was so complicated but it's not easy work at all.

[Eat.Sleep.Race]

Wish our manifolds looked as nice as E46 M3's did lol, i know its N/A but i do miss my ITB and big open box manifold.

[pwr hungry]

If we relocated the oil filter and utilized a dry sump setup, we could fit a much better flowing manifold easy peasy. Maybe I'll look into the filter relocation...anyone have any info on dry sumps? I've never looked into them before. So, I'm clueless on what would need to be done to run one safely.

[Ingeniator]

Originally Posted by pwr hungry

If we relocated the oil filter and utilized a dry sump setup, we could fit a much better flowing manifold easy peasy. Maybe I'll look into the filter relocation...anyone have any info on dry sumps? I've never looked into them before. So, I'm clueless on what would need to be done to run one safely.

I'm working on a dry sump system. Problem is how the current oil pump is setup in the pan. I'll need to disassemble the bottom end I think to find out all the information I need. Which means I'm looking for a donor motor for cheap. The oil filter relocation is something I have 90% planned out. I just need to fabricate a plate to mount where the old housing goes to accommodate the coolant and oil ports on the head. I'm using a spin on filter and thermostat/cooler from diesels. I know for sure it can handle the circulation rate of a dry sump system.