DRLC5

I have a 2016 Z06 with A8 Trans a AFE CAI with ported TB. Let me hear from the GURUs. what would you do to get to 675+RWHP? No internal mods. What are my options?. Ready go.

fleming23

Nitrous. Done

vtknight

Lol - there's about a million threads on this. I will spare you the flaming coming your way about searching as it's an easy answer; CAI, AR Headers, exhaust (not necessary really), lower pulley (15 or 18%) and tune will be at least 675 whp. You may want to look at cooling mods being an A8. Some people also go meth. Other supporting mods will be helpful too. Good luck in your R&D...

RBK

I accomplished with Exhaust Manifold off, straight pipes with x pipe
AFE cold air intake, and tune. Best

0HorsePowerAddicts

I would suggest IW 18% lower, cai, Corsa mid pipe, and a meth kit. That will put you right at 670-680 rwhp dynojet sae and 750-760rwtq on an a8. I haven't seen much power gained from longtubes on the lt4's. Our A8 that goes 138 in the 1/4 is on 100% untouched exhaust from heads back.

OnPoint

You made 675 to the wheels with no increase in boost?

moon2605

i have 673hp, headers, meth, tune, heat exchanger and tank. working hard to keep it cool for standing mile events. had an 18 percent overdrive pulley but it was removed immediately, making to much heat. seems to work well now. stock pulley

davepl

Remember "boost" means "air you tried to get into the engine but that got backed up in the intake tract".

Boost is useless. Airflow is good. So if you make improvements to a supercharged engine's airflow, you'll actually see boost go down while power goes up.

My point? That you can increase the power in one of these engines without increasing the boost, and in fact, you'll probably decrease the boost if you made cylinder and intake improvements (not with boltons though).

Dan.S

About how much would a bolt on path like this run?

Dan.S

This has got to be one of the most convoluted posts I have ever witnessed relating to boost. You are way off.

L Duncan

No he's not, If you open your intake, exhaust, install a cam, etc, all or some of these things will allow the engine to "flow" easier. Boost is pressure that builds inside a plenum that is trying to exit into the engine. If the engine can "eat" easier it will gobble the pressure quicker and lower your boost(with a supercharger) on a turbocharged engine the turbo will spool as fast as it needs to hit the wastegate prescribed pressure.

Dan.S

Yeah, and boost is useless lol... Because that just screams credibility.

L Duncan

Boost is useless unless it can get into your engine properly, also lower boost pressure equals lower iat1 and iat2 temps. That equals more power, less KR, etc. I'm getting ready to cam, upper and lower pulley, CAI, Long tubes. Without the Cam and exhaust my boost level would be to high and I would have to run meth and or high octane fuel. I should make 700 to 715rwhp on 93 pump...I'm also going to upgrade my intercooler system.

Dan.S

I assume you're running an A8...

And I'm not to keen on the specifics of this engine, are stating there is no waste gate or pressure bypass?

2019 ZR1

Just get a Procharger and headers and you will be at 750rwhp without out all the heat. You will gain mid range and top range power instead of shredding tires with all low range power. Sure you will pay more but it will be a lot easier on the car..

SharkbyteLT4

Pretty sure you can do it with a 18 percent lower, CAI, tune, and E85.

vtknight

I think what we should focus on is the fact a tune with our cars does allow power into the car properly if done right. It is also "easier" than cracking open the engine which is why some stay full bolt on. I do agree it's all about flow.

So I would state the easier answer is my original; CAI, headers and x-pipe, underdrive pulley (15 or 18%) and tune. Some people use meth to keep the temps down. I have a CR rad and GM secondary SEMA rad going in as well as catch can. My tuner already made high 600's and mid 700's torque with this setup on an A8.

I'm in Canada so I can't comment on price as we are taking a huge hit with the dollar conversion. But 6-8K?

zo6 08

Don't have this on my car but all of my research and speaking with MANY reputable shops 650-675 rwh

Easily achieved with

CAI
Meth (alky)
15-18% Pulley
Cold plugs
160' stat
Professional custom tune

Dyno runs before/after

Edit: under 4k installed!

old motorhead

So, if you increase the efficiency of your intake through a better CAI and maybe changing to a larger throttle body, your boost will go up....with no other changes. That's a bad thing?

C5 Scully

Sent you a PM off subject