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TPC20 Gti Vs turbo camaro, GT500 & more

JerseyDrew77

Autocross Champion
Location
Virginia & NC
Car(s)
2016 TR GTI S 6MT
In my case that’s not accurate at all...

I don’t have a dog in the fight, I personally don’t think the tcp20 or 38
a better choice than a comparable vortex standard or Xl, due to brand representation and products proven track records since the vortex has sooo many more cumulative driven miles.

I’m stating above your logic based on the video is not sound.


Also to be noted - it’s not far fetched to think a hybrid Is20 can run a high ten.. standard vortex has run 10.6s on more than on car, and that’s “based on” a is20 housing.

The Vortex XL has run that on GTI's. Have yet to see a standard Vortex able to do that on a GTI.
 

El_bigote_AJ

Autocross Champion
Location
Las Vegas
Car(s)
2019 GTI bunny
The Vortex XL has run that on GTI's. Have yet to see a standard Vortex able to do that on a GTI.

Correct but Irrelevant to the argument that a xxxx is20 based hybrid is incapable of it.

That’s fact that there has not been a GTI to cut a ten with a is20 hybrid has a direct correlation with the driver/traction /region, not the size of the turbos housings.


Let’s take the OP, his car, and TPCs turbo out of the equation (removes emotions and just uses logic) and now just play the numbers scenarios.

If a hybrid of is20 housing is able to make 475-500+ on ethanol, and a 38based unit is capable of 550+ And we are slapping that in a 3100 lbs car, with a 60’ under a 1.7 that 475 (to the wheels) should propel a car to complete at 1/4 mile in a high 10 sec pass and that 550 with under a 1.7 would do it with a mid 10 sec pass.

And the dyno queen cars that do over 600 should be knocking on 10sec flats door. (They just haven’t done it yet...) either due to the 600 is a high reader or the driver hasn’t made that perfect pass with the perfect conditions.


*trigger warning* lol
Now bringing the OPs ca back to this, if his tpc20 car makes 475ish and he gets a Perfect take off with perfect shifts, perfect environmental conditions and Weighs say 3000lbs (some of these guys still tiny and 130-40 wet) BASED ON NUMBERS alone that car can cut under a 10.99.
 

JerseyDrew77

Autocross Champion
Location
Virginia & NC
Car(s)
2016 TR GTI S 6MT
Correct but Irrelevant to the argument that a xxxx is20 based hybrid is incapable of it.

That’s fact that there has not been a GTI to cut a ten with a is20 hybrid has a direct correlation with the driver/traction /region, not the size of the turbos housings.


Let’s take the OP, his car, and TPCs turbo out of the equation (removes emotions and just uses logic) and now just play the numbers scenarios.

If a hybrid of is20 housing is able to make 475-500+ on ethanol, and a 38based unit is capable of 550+ And we are slapping that in a 3100 lbs car, with a 60’ under a 1.7 that 475 (to the wheels) should propel a car to complete at 1/4 mile in a high 10 sec pass and that 550 with under a 1.7 would do it with a mid 10 sec pass.

And the dyno queen cars that do over 600 should be knocking on 10sec flats door. (They just haven’t done it yet...) either due to the 600 is a high reader or the driver hasn’t made that perfect pass with the perfect conditions.


*trigger warning* lol
Now bringing the OPs ca back to this, if his tpc20 car makes 475ish and he gets a Perfect take off with perfect shifts, perfect environmental conditions and Weighs say 3000lbs (some of these guys still tiny and 130-40 wet) BASED ON NUMBERS alone that car can cut under a 10.99.

Sorry but I don't buy that. The only reason the R can get into the 10's with a standard Vortex is because of AWD. The GTI will need a bigger turbo. You can throw in all kinds of perfect scenarios but the facts are humans are not perfect, the tracks are not perfect, and the weather isn't always perfect. Plain and simple, if you want your GTI to get into the 10's, dammit, buy a f'ing IS38 hybrid or bigger!
 

Desslok

Autocross Champion
Location
PA
Car(s)
2019 Rabbit
Crazy fast cars. This looks like Burnout 3.
 

Gvazquez

Go Kart Champion
Location
North Carolina
Sorry but I don't buy that. The only reason the R can get into the 10's with a standard Vortex is because of AWD. The GTI will need a bigger turbo. You can throw in all kinds of perfect scenarios but the facts are humans are not perfect, the tracks are not perfect, and the weather isn't always perfect. Plain and simple, if you want your GTI to get into the 10's, dammit, buy a f'ing IS38 hybrid or bigger!
I'm definitely not taking sides here but and I see your point but the only thing that defies this statement is that Pacdawg has run in the 10s with his tomioka ihx475 and thats a small is20 based hybrid
 

daconchslop

Autocross Champion
Location
SC
Car(s)
ACS SE/Tech
pdisguise Has also ran a 10.9/121 in his Tomi A3.
 

JerseyDrew77

Autocross Champion
Location
Virginia & NC
Car(s)
2016 TR GTI S 6MT
I'm definitely not taking sides here but and I see your point but the only thing that defies this statement is that Pacdawg has run in the 10s with his tomioka ihx475 and thats a small is20 based hybrid

Is the ihx475 bigger than the TPC20?

pdisguise Has also ran a 10.9/121 in his Tomi A3.

And his A3 has quattro/awd.
 

El_bigote_AJ

Autocross Champion
Location
Las Vegas
Car(s)
2019 GTI bunny
The only reason the R can get into the 10's with a standard Vortex is because of AWD.

Cause AWD can get off the line quicker right? In that case comments contradict each other.

For me, traction will not be a problem when using full race slicks.

The concept of your argument is much too built around xxx size turbo, when what I’m explaining it that these are factual weight to power ratios for 1/4 times. regardless of how the power is made. A 3000 lbs car with near 500 hp should cut under a 10 and if it don’t it’s not the hardwares fault it doesn’t.
 

PowerDemon

Autocross Champion
Location
Richmond, VA
Car(s)
Golf GTI, Camaro ZL1
Ihx475 has the same turbine (TD06-SL2) & compressor (20G) wheels as the TPC20 but uses slightly bigger housings “modeled after” OEM IS20 housings made by Zage, the same ones used in the EQT standard Vortex

Weird how they are so similar and yet the IHX475 seems to perform better. IIRC they have much better spool and top end. Similar to the Vortex IMO.
 

J Peterman

Go Kart Champion
Location
USA
Weird how they are so similar and yet the IHX475 seems to perform better. IIRC they have much better spool and top end. Similar to the Vortex IMO.
Totally. Generally with larger housings you get more power potential up top at the expense of slower spool. There is some voodoo in the Zage housings’ design responsible for the Vortex/Tomioka’s quicker spool characteristics plus top end vs the OEM housings. I believe they also use a revised OEM IHI bearing design vs the MHI TD06 CHRA found in TPC’s turbos.

When DBV2 and TPC came out with upgraded TD06 CHRA’s it was a major talking point for their hybrids having improved durability over OEM. Not sure that has panned out over time. Definitely staying tuned for Turbo Direct SA’s forensic analysis of Navi’s blown TPC20...
 

JerseyDrew77

Autocross Champion
Location
Virginia & NC
Car(s)
2016 TR GTI S 6MT
Cause AWD can get off the line quicker right? In that case comments contradict each other.



The concept of your argument is much too built around xxx size turbo, when what I’m explaining it that these are factual weight to power ratios for 1/4 times. regardless of how the power is made. A 3000 lbs car with near 500 hp should cut under a 10 and if it don’t it’s not the hardwares fault it doesn’t.

They don't contradict each other. AWD will get off the line quicker than FWD, we all know that. I've never really had any traction issues with my car due to the suspension mods, mounts, and how Ed has tuned my car and I've already proved that by taking a forum member for a ride in my car and video taped it.

Even though it might look good on paper, doesn't always turn out that way and iirc, Pacdawg got his car to under 3000 lbs. Other than that, all I've got to say is prove me wrong...
 

Subliminal

Autocross Champion
Location
Vegas
Car(s)
Slow FWD VW Hatch
They don't contradict each other. AWD will get off the line quicker than FWD, we all know that. I've never really had any traction issues with my car due to the suspension mods, mounts, and how Ed has tuned my car and I've already proved that by taking a forum member for a ride in my car and video taped it.

Even though it might look good on paper, doesn't always turn out that way and iirc, Pacdawg got his car to under 3000 lbs. Other than that, all I've got to say is prove me wrong...
where can we find that video?
 
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