My tuning experience: Why TGV and EGR deletes are a must

[Cisco Kidd]

Originally Posted by rufus819

Follow Seeeya's guide on how to modify your stock CBE and remove whatever restrictions are in the muffler. That was the main reason I upgraded to the Cobb, I wanted less restriction/didn't have the time to do what he did. You won't notice a HUGE difference in power from a stock vs. aftermarket catback, maybe a few hp because you'll have less back pressure.

An aftermarket cbe will give you a consistent 10hp, while I was running my N1 dual on my car with MAP Stage 1 it was definitely stronger then my current 15 sti mid and 15 wrx stock mufflers not yet modded

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[-Raven-]

Very interesting thread especially OP's thoughts about the stock J pipe.

Can't help but wonder what gains he'll actually get if he changes it, rather than convince himself that it won't do much.....

[rufus819]

Originally Posted by -Raven-

Very interesting thread especially OP's thoughts about the stock J pipe.



Can't help but wonder what gains he'll actually get if he changes it, rather than convince himself that it won't do much.....

Did you not read that I plan to do the J pipe in the near future? My tuner said the J pipe will gain me 10 hp so I don't see a purpose in just doing the jpipe for a retune. I plan to do it with an intercooler and fuel pump

[DoctorPopcorn]

Oh yeah, the engine mounts are going to be a whole thing. I just finished helping my buddy put the 2" lift on his Crosstrek, so our confidence is up

From what I gather, the tranny mount isn't too bad. I'll let you guys know I know the car would be just fine with the contraption Perrin's coming out with, but I'm a sucker for peace of mind, and I'm a bit excited for how they feel.

[clark4131]

Originally Posted by DoctorPopcorn

Oh yeah, the engine mounts are going to be a whole thing. I just finished helping my buddy put the 2" lift on his Crosstrek, so our confidence is up

From what I gather, the tranny mount isn't too bad. I'll let you guys know I know the car would be just fine with the contraption Perrin's coming out with, but I'm a sucker for peace of mind, and I'm a bit excited for how they feel.

The tranny mount is piece of cake, one out of five wrenches on the difficulty scale. I want to do the engine mounts, but not without access to a lift and a screw-type engine jack! I may just end up paying a shop to do it for me...SC

[rufus819]

same, there's too much involved in doing the engine mounts to do it myself/have the access to all the right tools. I've done everything else thus far on my own but it was all straight forward. Toughest thing I did was that stupid Kartboy Short Shift adapter.

[rexster]

Cliff notes:

It's not uncommon to get >40 whp on a stock car with just a protune, especially on 93 octane.

TGV deletes add anywhere from 7-15 whp depending on other supporting mods.

EGR delete adds zero horsepower but has other benefits including reduced intake temps and lowering carbon deposits.

Comparing numbers from only two different cars is worthless because some cars make more power than others.

[The Fan]

Who are all the different manufacturers of tgv deletes and besides asthetics, are there any differences between them. Also, is iag the only brand that makes the egr delete kit?

[rufus819]

Originally Posted by rexster

Cliff notes:

It's not uncommon to get >40 whp on a stock car with just a protune, especially on 93 octane.

TGV deletes add anywhere from 7-15 whp depending on other supporting mods.

EGR delete adds zero horsepower but has other benefits including reduced intake temps and lowering carbon deposits.

Comparing numbers from only two different cars is worthless because some cars make more power than others.

Incorrect. The car that gained 40hp on the protune had a catless turboback.

[DoctorPopcorn]

Originally Posted by rexster

Cliff notes:

It's not uncommon to get >40 whp on a stock car with just a protune, especially on 93 octane.

TGV deletes add anywhere from 7-15 whp depending on other supporting mods.

EGR delete adds zero horsepower but has other benefits including reduced intake temps and lowering carbon deposits.

Comparing numbers from only two different cars is worthless because some cars make more power than others.

@rexster Agreed. Even with my OTS 93 tune, it FEELS like I've gained 40 whp.

@The Fan I have some EGR deletes on the way from Torque Solutions, and they also make TGV deletes that I have yet to put on. Mishimoto makes TGVDs, and MAPerformance is coming out with some. I wanted to wait for MAP's, but I was impatient.

[jobber]

i agree with this thread.. in fact, this thread is what made me do what is below.. in a nutshell.. i have been running stage 2 for a long time. i know the power well. i went BACK to stage 1 to do my TGV deletes and EGR deletes. (wanted to feel it on stage 1 power). I swear the stage 1 fell just as fast as my stage 2, plus it was quieter with no smell. On top of that, it made 15-20 more hp on virtual dyno than any of my stage 2 virtual dynos. To finish off my thoughts, I went BACK to stage 2 last night while keeping the TGV deletes and EGR deletes. I was not impressed so far, still working on my e-tune. But for the most part, i felt no extra power, just noise. -LastHumansGarage

[SeeeeeYa]

Originally Posted by jobber

i agree with this thread.. in fact, this thread is what made me do what is below.. in a nutshell.. i have been running stage 2 for a long time. i know the power well. i went BACK to stage 1 to do my TGV deletes and EGR deletes. (wanted to feel it on stage 1 power). I swear the stage 1 fell just as fast as my stage 2, plus it was quieter with no smell. On top of that, it made 15-20 more hp on virtual dyno than any of my stage 2 virtual dynos. To finish off my thoughts, I went BACK to stage 2 last night while keeping the TGV deletes and EGR deletes. I was not impressed so far, still working on my e-tune. But for the most part, i felt no extra power, just noise. -LastHumansGarage

With VD the emphasis is on WOT power... and I get that and your results.

What I'm interested to know is... how did the TGVDs change throttle feel and acuity in the initial, and critical range, that is used in DD driving in traffic?

Also, although you haven't had time with the new setup to evaluate it... how did the TGVD mod affect MPG?

[jobber]

Originally Posted by SeeeeeYa

With VD the emphasis is on WOT power... and I get that and your results.

What I'm interested to know is... how did the TGVDs change throttle feel and acuity in the initial, and critical range, that is used in DD driving in traffic?

Also, although you haven't had time with the new setup to evaluate it... how did the TGVD mod affect MPG?

well funny you followed up.. cuz i posted that thought above after only 1 drive on my stage 2 w deletes. i just got back from my 2nd drive. ok... it has a lot more power than my stage 1.. but the entire difference is "response". The stage 2 response is faster everywhere.

so for TGV's specifically.. i only felt one difference on my stage 1. much longer lasting power. i felt zero change in low end. but the pull at top end was very different.

throttle feel is a personal choice for me, cuz all my e-tunes have stock sensitive throttle which i love. i never have to push my pedal more than half way down to get my full power.

seen no effect in mileage yet.

so i was sure i wanted to go back to stage 1... cuz i really do hate the stage 2 noise.. but man, now im not so sure again.. i will prob go back to stage 1 and add an intake to finish it off. but ill try a couple more revs on stage 2 first.

[CRAracer05]

Does anyone have experience with removing the TGVs in cold weather climates? I would be curious to know how this affects cold weather starting first thing in the morning. If it is not much of an issue this seems like a really simple modification with decent gains.

[jobber]

1 issue with my TGV deletes which my tuner made me aware of before i even started. I have the start up rattle again, something related to "stratisfied fuel" something or other. Tuner is working to solve it, but its just a small annoyance. This noise only exists on my stage 2 w TGV deletes, not on my stage 1 w TGV deletes.

[jobber]

This is what stage 2 with TGV deletes gives you.. if you like this video, you can see there are 359 more videos on this car also.

Mods:
Cobb Catted Resonated Pipe
Torqued Performance Stage 2 tune (91 octane)
TGV deletes, EGR deletes

Made 30 mins ago..

YouTube

YouTube

[-Raven-]

Originally Posted by jobber

i will prob go back to stage 1 and add an intake to finish it off.

If you like your car quiet, then don't do your intake!!!

[jobber]

TGV deletes.. stage 2.. 91 octane.. before and after... RED is TGV deletes. the important takeaway is that horsepower hold till redline.. that is what TGV's bring you.. no horspower drop at 5500 like without TGV deletes.

RED = Stage 2 91 with TGV deletes
GREEN and BLUE = Stage 2 91 base, no additional mods besides a j-pipe.

[Cisco Kidd]

Originally Posted by The Fan

Who are all the different manufacturers of tgv deletes and besides asthetics, are there any differences between them. Also, is iag the only brand that makes the egr delete kit?

They are all the same basically as far as function goes unless you are buying the upper and lower kit.

Torque Solutions is whom I bought mine from as they had an EGR/TGV delete combo price shipped

http://prlmotorsports.com/prlmotorsp...x#.VxJ62XoneiM

http://www.torquesolution.com/TGV-DE...ts-su-tgvd.htm

http://turninconcepts.com/tic-2015-wrx-tgv-deletes.html

[turbomania16]

Originally Posted by CRAracer05

Does anyone have experience with removing the TGVs in cold weather climates? I would be curious to know how this affects cold weather starting first thing in the morning. If it is not much of an issue this seems like a really simple modification with decent gains.

Zero problem this winter.
My tune has the cold idle lowered from 1800 rpm to 1100 rpm and stratified fueling turned off.
A delete car only runs as good as the tune.
Michigan winter.

[h3llsp4wn]

Originally Posted by rufus819

Did you not read that I plan to do the J pipe in the near future? My tuner said the J pipe will gain me 10 hp so I don't see a purpose in just doing the jpipe for a retune. I plan to do it with an intercooler and fuel pump

Heres the thing though. You keep citing peak hp gains, which is pretty pointless when dyno tuning. What about max gains throughout other parts of the powerband such as the mid range? Not saying this is the case, but maybe you only pickup [email protected] or whatever, but 25hp at 3000. I would never look at peak hp as a deciding factor of whether a mod is worth it or not. You have 5400rpm of other parts of a graph to look at.

[16wrxjim]

Thinking of doing these on my 16 asap

[L.P.]

I just added aan intake to my car with ccorresponding tune zero other mods. Plan to do egr and tgv deletes next.

[rybrown]

Just booked an appointment for the install of an ECBS, TGV/EGR delete, and a pro tune. Il let you guys know how it goes and some of the numbers I get!

[nyknight]

I'm etuning tgv's I added to my stage 2 setup. What a difference this small mod makes