Xr6 Turbo P_Ba_Xr6

[rednose]

Any news yet?

[P_BA_XR6]

Not yet car had leaking waste-gate waiting for exhaust shop to fix exhaust leak then back on the runners

[Besty221]

( - < - ). = ## ( ~~ ). ## | |. |. | ___|. |____. |. | |. |. | | | | |. | ___ |

The above Picture is pretending to shoot myself. Mate Im over spending money on this car. It has spent more time on rollers and a hoist since the beginning of modding then it has on the road it the last yr or two

Is anyone else running setup like this or have a setup without the manifold

Just interest in comparisons

Get a bigger turbo or get it high flowed nd bigger compressor wheel ,

Obviously u got a bigger waste gate actuator ?

You should run in about 18psi with a set up like that

[P_BA_XR6]

My external wastegate was crap so I bought a new one waiting for new one to arrive then adjust pipe to suit new one

[P_BA_XR6]

Ok finally going back to tune shop after some heart ache with wastegates and aeroflow fuel rail. First one I bought it boost creeped and had issues due to previous owner playing with wastegate springs and couldn't control the synapse very well. So I gave up and bought a turbo smart pro gate and seems to work fine. I thought it wasn't for moment so I test it with a regulator on my compressor was actuating at 14/14,5 psi. Which is good as I believe as the spring is 14. So I thought I would test my boost gauge and it is f.... So we will see how we go tomorrow

[P_BA_XR6]

Today we were on the Dyno on this lovely cold weather lol and I made 400rwkw on 15 at 43+ inlet temps and I do consider the semi we're defiantly a bad idea. As they went off. As it will be interesting to see how it is with the cooler weather. Muchly appreciated for joes tuning. I wish it was cooler day. But you get that. Who would know it is was going to be as hot as it was today a week ago. But once again thank you CMS

[P_BA_XR6]

Today we were on the Dyno on this lovely cold weather lol and I made 400rwkw on 15 at 43+ inlet temps and I do consider the semi we're defiantly a bad idea. As they went off. As it will be interesting to see how it is with the cooler weather. Muchly appreciated for joes tuning. I wish it was cooler day. But you get that. Who would know it is was going to be as hot as it was today a week ago. But once again thank you CMS

[dragons90]

how much power is the twin 2.5" good for?

[rednose]

I've seen 470 on the Autotech dyno, hoping for similar results when the GTX is installed.

[P_BA_XR6]

Rough calcs

They say twin 2.5 is good for roughly 460hp before it becomes restriction it has a cfm roughly of 509 each pipe. So about 1018 cfm overall

So if want to know difference between 3in and twin 2 1/4.

Twin 2 1/4 is good for 370hp approx at cfm 810

3in is good for 339hp at cfm of 747

If you want good hp go for 4in or twin 3in

1) Mass of air that the engine breathes in + mass of fuel = mass of exhaust gases

Conservation of mass, right?

2) To calculate the volume of air the engine takes in, we multiply the displacement of the engine by the engine RPM and then divide by two (it takes two full revolutions for the engine to exhaust it’s entire air volume). We then convert that to volume to mass.

3) To make the calculations easy, you want to assume that combustion is perfect, I.e. there aren’t any byproducts, any unburned fuel, etc. It’s easier to assume perfect combustion and then “back in” to the actual numbers using an estimate after the fact.

4) Since you’re assuming perfect combustion, it’s easy to figure out how much fuel mass is added to the exhaust.

5) Once you know the mass of the exhaust gas, you just figure out how much volume that mass would occupy. Of course, you have to adjust for expansion due to the high exhaust gas temperature.

That’s it! Of course, when you sit down to figure it, you’ll find that getting a good scientific estimate takes a lot of work (which is why we don’t bother with it here).

Quick and Dirty Exhaust System Math

Easy Way To Estimate: Your intake system needs to flow 1.5 CFM per engine horsepower, and your exhaust system needs to flow 2.2 CFM per engine horsepower.

Good Way To Estimate: Take engine RPM x engine displacement, then divide by two. This is the intake volume. Use this same volume of air for the exhaust system, but then correct for thermal expansion (you need to know exhaust temps to figure things out).

Exhaust Pipe Size Estimate: A good section of straight pipe will flow about 115 CFM per square inch of area. Here’s a quick table that shows how many CFM each common pipe size will flow, as well as the estimated max horsepower for each pipe size.