Topic: How I made 400 Wheel Horse Power /w help from Trifecta Tuning and Hahn Racecraft

[Jebsmith]

I am making this post entirely from my sprint epic so there will be additions and edits for the next few hours.
 
I'll be posting dyno's and the parts that achieved those numbers.  This is all from memory, so if someone sees an error and can post one of my previous threads with the correction, I will make the correcton in this thread. 
 
The first dyno I am posting is a stock engine with no bolt ons.  The red lines are completly stock and the blue are a trifecta tune.

 
The first mod I actually did was the Hahn super 20g turbo kit.  After talking with Bill we decided to use his kit to max out every component on the car to see what its real world limit was.  Vince agreed this was a great idea and he now has awesome maps ready to go for each stage of your upgrade process. 
 
Hahn kit installed

 

 

 

 
Here is the dyno of just the turbo kit.  This is after only a few data logs and reflashes as the dyno was heavly booked. 

 
 
So at this point I did a pressure difference test in the stock intercooler.  At high boost it was dropping over 5 psi and I think as high as 7 psi across the core.  This was the next bottle neck.  I replaced it with the Hahn Intercooler which only dropped 2 psi.

 

 
Ic difference...

 
After tuning here is the dyno for the Hahn IC

[Jebsmith]

We all know that the stoc IC pipes are junk with that crimp that reduces the diameter by about half.  I felt that was the next bottleneck. 

 
My friend Andrew Dimartino in Lexington ky, cut out the crimped section and welded in mandrel bent pieces to make it nice and round the entire length.

 

 

 

 

 
Here is the dyno after just IC pipes

 
Next we have the dyno for the exhaust and downpipe.  The exhaust was also made locally by Andrew Dimartino using 3 inch mandrel bent pipe, with magna flow mufflers.

 

 

[Jebsmith]

The Downpipe is a Hahn Racecraft 3 inch mandrel bent. It has a flange that uses a vband to attatch directly to his super 20g turbo.

 
With the addition of both we hit the stock fuel limit and made a respectable 372, with ipws maxed and 2700psi rail pressure.  Here is that dyno
 
So, wanting to hit 400, I said "Vince, let's go 100% meth to suppliment fuel and hit 400". So I added a second nozzle, put in pure methanol and here is the result.  This is also with ome amazing cam phase angle tuning by vince
 
All these pulls except the first two were made with the AEM water/meth kit using the largest nozzle.  The injection site is an inch after the tmap sensor.  The progressive spray started at 11psi and was full spray by 26.  This caused a weird spike in afr.  So for the pure meth, I started the spray at 4 psi and full spray as 30 psi.  This allowed the ecu tme to adjust fo the extra fuel and made a nice pretty afr.
 
This is my meth injection site, I use a t fitting and two big nozzles.

 

 

 
lol
 
After every part was installed Vince and myself worked to make sure everything was maxed to the limit.  I feel these dyno graphs acurately represent those limits.  Every pull was done by Hal Heiner at Dynosty in Lexington KY. 
 
Bill Hahn was there every step of the way with advice, late night tech calls and support.  Honestly Vince and Bill own two great companies.  If you want 400whp this is a pretty easy route to take.  I did all the hard work for ya!

[spartan]

Thanks for documenting this evolution and congrats!  The only variable that is unclear is when you added meth injection?  A lot of people may not want to do that and would be interested.  I'm guessing you did it when you upgraded the IC pipes since "most studies have shown" that changing the IC pipes doesn't increase HP that much (20HP!).

[Arabas]

Nice post Jebsmith!!
njoy your beasty Sky!  

turbo heat shield ?
what was the max power without meth?
exhaust is just a straight pipe like Solo race?
no cat?
what about intake?

as far as performance, how do you compare in terms of torque before and after? i mean on street driving.. do you have to downshift or is there really good power from lower rpms?

[Jebsmith]

Nice post Jebsmith!!
njoy your beasty Sky! 

turbo heat shield ?
what was the max power without meth?
exhaust is just a straight pipe like Solo race?
no cat?
what about intake?

as far as performance, how do you compare in terms of torque before and after? i mean on street driving.. do you have to downshift or is there really good power from lower rpms?

I am using the stock intake,

torque before and after what? Stock and the end result?

And since I see 20psi at 2k there is no need to downshift all the time

The exhaust has 4 inch magnaflow cans, no cats, and I use the stock heatshield

Meth was added very early so I don't really have any non meth high power runs.

[Jebsmith]

Thanks for documenting this evolution and congrats!  The only variable that is unclear is when you added meth injection?  A lot of people may not want to do that and would be interested.  I'm guessing you did it when you upgraded the IC pipes since "most studies have shown" that changing the IC pipes doesn't increase HP that much (20HP!).

Most studies were done on stock turbos pushing 20ish psi, not 30, so if I gained 2 psi by changing the pipes then 20whp is perfectly acceptable.  And I added meth right after the turbo was installed, before changing the ic pipes, as you can see by the pictures

[kennysabarese]

Great post jeb. Thanks for the details. Many of us thought that with such a high A/R that you would be laggy, but it seems that isn't the case at all based on your dynos.

Does it feel laggy in normal street driving?

[Arabas]

as for torque, i was reffering to stock turbo+tune vs your current setup.
maybe you should add an intake, since you have all these goodies on your car!
it would be interesting to see how this setup would have worked without the meth.
as spartan said, a lot of people may not want (or not are able) to do that.

again, thx for this interesting topic!!!

[Brad Kenny]

Great write up Jeb!!! One of the best of the year for build projects. You definitely have given a direction for those wanting to go this route and push the envelope for the 400 HP club.

Have a great New Year and be safe with your torque monster.

Impressive this was all done from your Epic 4G cell phone, amazing how technology has expanded over the past 10 years and allows things like this to be possible.

[Jebsmith]

Great post jeb. Thanks for the details. Many of us thought that with such a high A/R that you would be laggy, but it seems that isn't the case at all based on your dynos.

Does it feel laggy in normal street driving?

It spools just as fast as stock + the tune.  Looking at the first dyno and the last, both hit 300 wheel torque at 3300ish, the 20g goes up another 110 though.  Vince worked out the bugs and with the cam phase angle changes we were able to spool it over 1k rpms sooner.

[kennysabarese]

as for torque, i was reffering to stock turbo+tune vs your current setup.
maybe you should add an intake, since you have all these goodies on your car!
it would be interesting to see how this setup would have worked without the meth.
as spartan said, a lot of people may not want (or not are able) to do that.

again, thx for this interesting topic!!!

I think from other conversations someone figured that without meth you would be around 380HP due to the fuel limitations.

[kennysabarese]

It spools just as fast as stock + the tune.  Looking at the first dyno and the last, both hit 300 wheel torque at 3300ish, the 20g goes up another 110 though.  Vince worked out the bugs and with the cam phase angle changes we were able to spool it over 1k rpms sooner.

That's awesome.

[Jebsmith]

as for torque, i was reffering to stock turbo+tune vs your current setup.
maybe you should add an intake, since you have all these goodies on your car!
it would be interesting to see how this setup would have worked without the meth.
as spartan said, a lot of people may not want (or not are able) to do that.

again, thx for this interesting topic!!!

I will be sticking with the stock intake, don't fix it if it isn't broke. I doubt I would gain anyting, and I would have to spend money on dyno tuning since the air tables would be all jacked up from changing the inside pipe diameter where the MAF is.

[DeepBlueGXP]

Stock fuel injectors?  

How does the stock heat shield hook up, I don't see the shield over the exhaust headers.

Does the Hahn BOV vent to atmosphere?

[Jebsmith]

Stock fuel injectors? 

How does the stock heat shield hook up, I don't see the shield over the exhaust headers.

Does the Hahn BOV vent to atmosphere?

Stock fuel injectors as there are no aftermarket ones yet

Stock heat shield hooks to the two normal holes up top, and I drilled a hole in the bottom to attatch to the vband bolt.  No pic of that yet,sorry.

And the hahn bov recirculates.

[JoshMcMadMac]

Great write-up, Jeb.

How was the wastegate handled?  Is it set up like stock, or was an aftermarket one tuned for?

[Jebsmith]

Great write-up, Jeb.

How was the wastegate handled?  Is it set up like stock, or was an aftermarket one tuned for?

The 20g is internally wastegated, I used the stock wg controler and vince tuned with that.

[Yogi]

Great post, Jeb!   

Thanks for sharing all of the details!   

[DeepBlueGXP]

Stock fuel injectors as there are no aftermarket ones yet

The 372 HP dyno, was that on stock injectors with or with out meth?    It would be nice to know how much power the stock injectors can put out before the car starves.  Hate to have it run lean at high boost and HP.

[Jebsmith]

The 372 HP dyno, was that on stock injectors with or with out meth?    It would be nice to know how much power the stock injectors can put out before the car starves.  Hate to have it run lean at high boost and HP.

372 was made with 50/50.  412 was 100% meth

Everything is stock injectors.  There are no injectors for the LNF.

[Houstice]

Could you mention your sponsors again? I forgot who they are.

[Jebsmith]

Could you mention your sponsors again? I forgot who they are.

Not a problem.  PNC bank.  They give me all the money I want.  All I do is swipe this plastic thing.

But seriously, I have paid for and installed everything myself.  I have no sponsors and I wouldn't have it any other way.

[Houstice]

Not a problem.  PNC bank.  They give me all the money I want.  All I do is swipe this plastic thing.

But seriously, I have paid for and installed everything myself.  I have no sponsors and I wouldn't have it any other way.

That's the same for me as well!

You remember, you asked me the same question on my thread.

[Brazen17]

Is there a price out for the 20g kit yet or did I miss it? The 20g sounds like a good way to go but I don't know if I would want the meth or not. Seems to make great power even without it!