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Predatorbird's 2017 VW GTI

 
Old 03-15-2019, 09:51 AM
  #561  
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Originally Posted by civicdrivr View Post
I kinda miss that little spooly-boi IS20 in the GTI, made gobs of power at like 2k rpm but died at 5k

3k is about the same as the standard threshold for the factory IS38, but the L450 flows more. The stock IS38 doesn't die as hard as the IS20 in high rpms, but it does lose some boost pressure around 6k or so. I think you made a solid choice for a daily, and it will surprise a lot of people.

Definitely get some dyno time scheduled to dial in the tune. It'll be way better then a street tune.
Thanks. I think it will end up being a great choice all said and done. The shop charges $100/hour and Ed says it takes 2-3 hours. I was going to get it on the dyno after the tune is finished to get numbers, so some of that cost is a wash. I tried to plug my datalog into Vdyno to get an estimate, but the log was missing some parameters. I might do another pull later with those checked off to see where the car sits at baseline.

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Old 03-19-2019, 09:48 AM
  #562  
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Updates!
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Old 03-19-2019, 05:54 PM
  #563  
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Originally Posted by TylerT View Post
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I just loaded my 3rd revision this morning, but it's been raining and I haven't been able to get on it. I talked to a guy earlier today that's getting his EQT turbo GTI tuned by the same guy (EQT is the tuners turbo) and he said he felt the base tune was very conservative and his car really started to wake up with his 4th revision. The tuner said he usually does 8-10 revisions when tuning. Tuning from this point forward might get a little sketchy. He's been asking for 3rd gear pulls, but now he asked me to try for a 4th gear pull as well. It might be time to rent a dyno to finish up.

While on my way to work yesterday, I was at a red light and decided to roll into 1st gear and let it rip when the light turned green. Cobb traction control works amazing! I had very little slip and the car fucking took off. I fell in love with my car and it's no where near being done. I can only imagine how the car will feel once it's done.
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Old 03-19-2019, 06:42 PM
  #564  
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A lot of the FWD Eurodyne guys are hoping they integrate traction control similar to what Cobb has. I've heard from others that it's pretty good.

And yeah, put it on the rollers to revise further. Street tuning in 4th is taking you to what, 130-140mph?
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Old 03-19-2019, 06:49 PM
  #565  
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Originally Posted by civicdrivr View Post
A lot of the FWD Eurodyne guys are hoping they integrate traction control similar to what Cobb has. I've heard from others that it's pretty good.

And yeah, put it on the rollers to revise further. Street tuning in 4th is taking you to what, 130-140mph?
Yeah it's just over 130. I can do it at the spot I've been using, but still sketchy.
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Old 03-20-2019, 12:31 PM
  #566  
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As somebody who did 3 logs last night ..... yeah, street tuning can get sketchy.

I have a specific road that I use for logging - very good visibility, 4 lanes split by a median, no traffic, and it's pretty remote ... although, I always do a test run at the speed limit to make sure there's no road debris / cops ... last thing you want is a surprise when you're doing 100mph+.
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Old 03-20-2019, 01:17 PM
  #567  
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True, but SD to Tijuana is a minor hop.
PB must be running down to Cuba to do his logging
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Old 03-20-2019, 01:23 PM
  #568  
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Old 03-20-2019, 10:22 PM
  #569  
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Just did 3rd and 4th gear logs


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Old 03-21-2019, 10:02 AM
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4th gear logs is nutty ... be safe out there mang.
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Old 03-21-2019, 10:06 AM
  #571  
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+1, Book some time on the rollers; you'll be able to fine tune as needed.
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Old 03-27-2019, 09:12 AM
  #572  
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Old 03-28-2019, 08:40 AM
  #573  
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He just sent me a new revision last night. I'm going to load it today and datalog tonight. Nothing new to report other than me pulling on an ATS-V the other day getting on the interstate.
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Old 03-28-2019, 08:46 AM
  #574  
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Hellll yes. No doubt, sleeper factor is one of my favorite aspects of building up a car. How is the traction control handling itself with the added power?
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Old 03-28-2019, 11:30 AM
  #575  
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Originally Posted by TylerT View Post
Hellll yes. No doubt, sleeper factor is one of my favorite aspects of building up a car. How is the traction control handling itself with the added power?
Traction don't seem nearly as bad as it was before. With factory TC coded to turn all the way off and Cobb TC on, it's far less invasive.
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Old 04-25-2019, 09:03 PM
  #576  
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As my tune is wrapping up, I decided to hit the dyno this morning. I'm very happy with the numbers on stock fueling. The car made 396/390 SAE (411/405 STD correction). I'm still having some issues in the higher RPM range. It's breaking up and feels like misfires. I logged each dyno run and sent them to my tuner to check. I'm hoping to get it resolved with either new plugs or upgraded HPFP.


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Old 04-25-2019, 11:32 PM
  #577  
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Lord, does that thing have a Hemi?
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Old 04-26-2019, 12:06 AM
  #578  
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Shit
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Old 04-26-2019, 12:27 AM
  #579  
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more than you expected, right?
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Old 04-26-2019, 07:02 AM
  #580  
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Solid numbers!!
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Old 04-26-2019, 07:26 AM
  #581  
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400hp FWD is crazy. Congratulations on the build. Those are impressive numbers from that engine.
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Old 04-26-2019, 07:56 AM
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Originally Posted by rockstar143 View Post
more than you expected, right?
I'm right on par with other hybrid turbos and stock fuel. My fear was that I was going to be way under those numbers
Originally Posted by civicdrivr View Post
Solid numbers!!
Thanks! I'm loving how the curve looks. This turbo loves the top end!
Originally Posted by charliemike View Post
400hp FWD is crazy. Congratulations on the build. Those are impressive numbers from that engine.
It's crazy what cars can make these days. This setup is surprisingly easier to drive than my stock turbo.
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Old 04-26-2019, 10:37 AM
  #583  
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yeah, but in the end...it's *just* a DSG though
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Old 04-26-2019, 10:48 AM
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Originally Posted by rockstar143 View Post
yeah, but in the end...it's *just* a DSG though
I remember your phone call after you test drove the S4... "Dude, this is not a normal automatic!"
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Old 04-26-2019, 11:00 AM
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Sweet numbers!!!
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Old 04-26-2019, 11:07 AM
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Sweet results! You better sell those Pretorias to me before all that power blows them up...
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Old 04-26-2019, 11:11 AM
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It amazes me the power that you can get out of a lively single turbo in 2.0L ...

Impressive numbers and excellent powerband.
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Old 04-26-2019, 02:16 PM
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Wow, nice work! Impressive.
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Old 04-26-2019, 08:59 PM
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Originally Posted by SamDoe1 View Post
Sweet results! You better sell those Pretorias to me before all that power blows them up...
I'm taking these wheels to the grave with me!
Originally Posted by TylerT View Post
It amazes me the power that you can get out of a lively single turbo in 2.0L ...

Impressive numbers and excellent powerband.
I love the powerband! My tuner is testing his new, bigger turbo on his own Golf R with Cobb's unreleased MPI and he made 584/465. It's insane to me that a 2.0 can make that kind of power.
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Wow, nice work! Impressive.
Thanks! I'm glad I got rid of the FoST for this car. I was about to do a turbo swap on it, but I wasn't impressed others that went that route.
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Old 04-26-2019, 09:39 PM
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I had read that Ed was playing around Eurodyne - but I'm not sure how true that is. I really wish he would jump into that tuning platform - the tuner I was planning on going with retired recently

I'm pretty set on running his hybrid in a year or so.
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Old 04-27-2019, 07:57 AM
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Originally Posted by civicdrivr View Post
I had read that Ed was playing around Eurodyne - but I'm not sure how true that is. I really wish he would jump into that tuning platform - the tuner I was planning on going with retired recently

I'm pretty set on running his hybrid in a year or so.
I think I read that, too. He knows his own turbo better than anybody, so I'd want him tuning it for me. His first batch of turbos have had multiple failures. I'm sure in a year from now it will be all sorted out. If I was AWD, I'd probably consider his bigger turbo that is just being released.
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Old 04-27-2019, 08:30 AM
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Originally Posted by Predatorbird View Post
I remember your phone call after you test drove the S4... "Dude, this is not a normal automatic!"

you were a huge proponent in my giving the DSG a shot.
and I realized then that I had been kinda curious about it
even when I had the Caddy...I wondered if short quick shifts
would make the drive feel engaging enough to be fun. I realize
now that it's not how a car feels when you hoon it that makes it
truly enjoyable. It's how it drives around town since that's 95% of
your driving. The DSG shifts under 2K (which I wouldn't be disciplined
enough to do with a manual for fuel savings) while feeling torquey and
like a rocket that wants to go. Light throttle...silent killer. Partial
you start hearing some whining, full throttle you hear a lot of whining
from the wife to be to slow the fuck down because the inertia makes
her feel vertigo.

So I guess what I'm saying is thank you for the push

It's that kinda thrill.
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