Char's E92 Build thread

[MX793]

All things equal, more aggressive cams = power band shape changes biasing to the top end. Being that the stock turbos in these things can make stock boost all the way to redline I don't think the turbos are choking anything out.

What makes you think the stock turbos can maintain boost pressure up to redline? 

And if they can, then the boost control system is cutting the boost at higher RPM, so it's only a matter of reflashing to get the power to carry to redline.

The power falls on its face because the boost is going away at higher rpm.  This is either because the boost control is bleeding more air off via the waste gate or because the compressor can't keep up with the demand for air from the motor.

[12,000 RPM]

What makes you think the stock turbos can maintain boost pressure up to redline? 

And if they can, then the boost control system is cutting the boost at higher RPM, so it's only a matter of reflashing to get the power to carry to redline.

The power falls on its face because the boost is going away at higher rpm.  This is either because the boost control is bleeding more air off via the waste gate or because the compressor can't keep up with the demand for air from the motor.

Here is the stock boost curve for the N54



Compare that with the torque curve:



If it were just a matter of boost/turbo efficiency the torque curve would not start falling off as the boost is hitting its peak. The turbos have to add boost to maintain a flat torque curve as the RPMs increase. To me that speaks to a breathing problem/choked up cam timing.

[MrH]

Why do turbos have to add boost to maintain a flat torque curve as RPM increases?

[MX793]

That's not a stock boost map.  Dude had an aftermarket downpipe.

[Char]

Picked up a set of rebuilt PSS9 Bilstein coilovers, and I'm going to swap out the springs to a linear spring rate + camber plate and sway bar in the next few week here.

I also got in my file for the intake manifold that I put on, so that needs to be installed.

[Char]

[MrH]

Genji wallpaper?  What system are you playing on?

[Char]

Genji wallpaper?  What system are you playing on?

PS4, the only console that matters hahaha. Samu-R-I is my tag, but I'm not that great...yet.

[MrH]

Owwww shiiiiiit. Bout to beat on Char

[68_427]

I'm getting a ps4 as well but idk wtf gaingly is

[MrH]

I'm getting a ps4 as well but idk wtf gaingly is

Just buy overwatch. Only game you need

[Char]

Just buy overwatch. Only game you need

This

[68_427]

But I have gran Turismo on ore order so I can put a bigger bar on the rear

[Laconian]

Zarya, Genji, Mei. Dat high skill cap lyfe.

[Char]

Zarya, Genji, Mei. Dat high skill cap lyfe.

It's all about Genji...trying to get good with someone else, but he just suits my style more.

Also, my review on the software upgrade:
Tune is installed and the car feels fantastic, which is saying a lot considering the car already had a tune (stage 1, for single stage manifold) on it before.

I originally had the single stage manifold tune (Stage 1) which increased power everywhere, including the top of the RPM range. Unfortunately, the eccentric shaft failed on my car around the same time as the install (and I did know it was a problem beforehand) so I barely got to experience it in all of it's glory.

I recently repaired the eccentric shaft sensor, and swapped the intake manifold with a 3 stage manifold. Immediately noticeable is the increase in torque in the lower RPM ranage, but because I was running the wrong tune - there was a HUGE dip in the middle of the band and a fall off in power near redline.


I'm happy to say that's all in the past now - more power everywhere, or at least more linear power. No drop in the middle of the band with the big DISA transition and no fall off in power at the top of the rev range. It even seems to have gotten quicker from when I first installed the tune. I'll be resetting adaptations and giving it another shakedown, but right now, no complaints.

[FlatBlackCaddy]

So, basically, you got vtec.....yo.

[MrH]

Zarya, Genji, Mei. Dat high skill cap lyfe.

I had to look that up to see what that means.  Mei is not a high skill cap.  Zarya is just terrible all around

Can we just turn this into an Overwatch thread?

[Submariner]

So, basically, you got vtec.....yo.

[AutobahnSHO]

buttmeter is strong with this one

[Char]

I bought headers.

[Eye of the Tiger]

I bought headers.

Do you mean you upgraded to the Nautica headers? The Villager came from the factory with long tube 4-3-2-1 headers. The Nautica Edition used the same headers, but with a special marine grade yellow chrome finish with a pattern of embossed Nautica logos.

[AutobahnSHO]

Do you mean you upgraded to the Nautica headers? The Villager came from the factory with long tube 4-3-2-1 headers. The Nautica Edition used the same headers, but with a special marine grade yellow chrome finish with a pattern of embossed Nautica logos.

[Char]

The car has H&R sport Springs with Stock Sport package dampers...as I rack up the miles, the car isn't feeling as planted as before. I have a set of B16 PSS9s I was going to have re-valved for linear springs, but Bilstein isn't really helping me out (frozen adjuster, rear is missing an adjuster), plus the cost is $200 per shock, plus $450 for the linear springs and another $450 for camber plates.

Any suggestions? Might just sell it and get something like BC/Fortune Auto...

Need to flush the brakes lines, clean/swap or replace the vanos solenoids, and flush the cooling system and maintenance should be golden.  Headers need to be put on, but I'm worried about the exhaust...

[MrH]

Oh, the PSS9s are used?

[Cookie Monster]

I still think BC's on a DD/mildly tracked car is still more than enough suspension.

[Char]

Oh, the PSS9s are used?

Yeap. They popped up while I was looking for a swapbar, so I grabbed them. Expensive inpulse buy - but one of the front adjusters doesn't turn, and both don't have markings of what they are actually adjusting. There rear has just one (with markings) but the other doesn't, which the seller did disclose - he just swapped them between the two. I was going to send them out for a revalve/build but I'm wondering if any of these issues would even be corrected. I might just sell them for what I paid.

[Char]

I still think BC's on a DD/mildly tracked car is still more than enough suspension.

The only reason I was set on Bilstein was the reported longevity of the shocks, requiring less frequent rebuilds compared to other shock brands.

[MrH]

Just have Bilstein do a standard rebuild then.  They should be able to fix the stuck adjuster.

I wouldn't worry about the markings.  You can just click them and count how many clicks it is.  There should be 9 indentations.

[Char]

Just have Bilstein do a standard rebuild then.  They should be able to fix the stuck adjuster.

I wouldn't worry about the markings.  You can just click them and count how many clicks it is.  There should be 9 indentations.

They are supposed to click? One of them moves cleanly through the range with nothing that grabs...same with the rear. I'll try calling today.

[CaminoRacer]

They should definitely click. A smooth range would suck.