Reducing turbo lag: What should my next step be?

[Narcosis]

The tuner comment was assuming that you'll be using an EBC in the system.  Modern tunes can manage boost based on rpm, gear, throttle position, etc. 

One could always use a small shot of nitrous to eliminate the perceived lag.  

Or MEGASQUIRT!

[Rowleym]

You should really use the cheap EBC they have for megasquirt.

Anyways

TWIN SCROLL MAKES AN AMAZING AMOUNT OF DIFFERENCE.

Not only on spool up(sometimes between 200-400rpms sooner)

But TRANSIENT response. Which is what matters to me.

I hope you're happy to know that your car spools faster than a stock bugeye wrx...

But anyways I should really get this twincharged project done because you would love the whole no lag thing.

In reality I was hoping to see full boost by 3k, which for me is nothing..

[B C]

Thanks for the input Rowley

I added some timing advance down low and will be doing the "Dodge Garage" modification to my blowoff valve because I know it is bleeding off some pressure under WOT and shall see how things improve there.

[TCD]

If you take a data driven approach to building/tuning your car you will be much better off.  Guessing at solutions doesn't work.  You have fantastic data logging capabilities.  You need to use them.

[Rowleym]

Anything specific he should datalog?

[B C]

log all the things

[Narcosis]

Rowleym said:

Anything specific he should datalog?

Everything.  The more data available the better.   Snap - which datalogging capabilities is TCD speaking of?  How is your car setup today?

FWIW, when I log my car (jb4 equipped) I get all possible data available via the OBD2 port.  That way I can display anything/everything I want when addressing a possible issue with the tune/car/setup/etc.

[B C]

Megasquirt

Everything can be logged.  everything and more

[TehRaydarlover]

E30 anti-lag coming soon to a quiet suburb near you.

I've watched this video 20+ times and I still giggle like a little school girl

[B C]

I like the burnt portion of the strap

[frcefed]

I have the same dimensions on my Garrett t3t4 with ball bearings (and a warranty, thanks todd:)) and I have quite a bit of lag too, boost builds around 2600 and I hit 20psi around 4300rpms. I've been thinking about going the adjustable cam gear route.

[B C]

Good to know. I cant fathom 20psi

[frcefed]

Well its only supposed to be 15psi but my boost controller sucks and anything over 13psi and my clutch slips anyway. Ha

[B C]

Haha! Mine does as well so its somewhat humorous that part throttle is faster than full throttle sometimes. Id really like to check it out sometime though

[frcefed]

'Part throttle is faster than full throttle' I know! I always thought there was something wrong with my turbo or something. Haha

[frcefed]

I ordered a performance clutch from UUC but I'm still waiting for it to come in.

[Narcosis]

TehRaydarlover said:

E30 anti-lag coming soon to a quiet suburb near you.

I've watched this video 20+ times and I still giggle like a little school girl

The only thing that comes to mind is "why?"...

[Earl]

So there is no turbo lag

[jc43089]

Because Rocketship!

[Rowleym]

Should have bought a turbo without such outdated design hehe. Gotta love Garrett. Let's bandaid our bad design with a ball bearing cartridge that can't be rebuilt!