Vargas GC turbo initial review

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Revision 1 datalogs uploaded to the IMW cloud last week, revision 2 received today. Just uploaded to my car and will go for a little ride shortly to get round 2 datalogs. Asides from how much low end response and overall great power delivery I feel from this turbo, I will say the IMW tune feels incredibly smooth driveability wise. The first time I tuned with drob when I first got the RV6 R365 I felt it wasnt so smooth, a bit jerky on and off throttle, part of the reason I went to phearable, this time around it is feeling super smooth! Very happy about that.

Honda Civic 10th gen Vargas GC turbo initial review 20220808_183031
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Revision 1 datalogs uploaded to the IMW cloud last week, revision 2 received today. Just uploaded to my car and will go for a little ride shortly to get round 2 datalogs. Asides from how much low end response and overall great power delivery I feel from this turbo, I will say the IMW tune feels incredibly smooth driveability wise. The first time I tuned with drob when I first got the RV6 R365 I felt it wasnt so smooth, a bit jerky on and off throttle, part of the reason I went to phearable, this time around it is feeling super smooth! Very happy about that.

20220808_183031.jpg
Let’s gooo, I am waiting for file 3 for this turbo with drob, I can agree my tune feels very smooth and afr and fuel Trims are spot on already, smooth power delivery too make 26psi to redline, don’t get me wrong I absolutely trust drob but is he having you do a 2000rpm wot? Feel like I’m going to blow a rod to the moon when I mat it that low haha
 
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Let’s gooo, I am waiting for file 3 for this turbo with drob, I can agree my tune feels very smooth and afr and fuel Trims are spot on already, smooth power delivery too make 26psi to redline, don’t get me wrong I absolutely trust drob but is he having you do a 2000rpm wot? Feel like I’m going to blow a rod to the moon when I mat it that low haha
Yes just completed the datalogs for Rev 2 and uploaded. He does have me do the 2000rpm to redline as well. Revision 2 feels great!
 

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Revision 1 datalogs uploaded to the IMW cloud last week, revision 2 received today. Just uploaded to my car and will go for a little ride shortly to get round 2 datalogs. Asides from how much low end response and overall great power delivery I feel from this turbo, I will say the IMW tune feels incredibly smooth driveability wise. The first time I tuned with drob when I first got the RV6 R365 I felt it wasnt so smooth, a bit jerky on and off throttle, part of the reason I went to phearable, this time around it is feeling super smooth! Very happy about that.
You made the right choice with Phearable. A much smoother and safer tune.
 
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You made the right choice with Phearable. A much smoother and safer tune.
This time around IMW is feeling much smoother than in the past no complaints at all. Both great tuners, looking at my datalogs so far all looks safe. I will more than likely have phearable etune in the future as well just to have options.
 


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Revision 3 uploaded, data logging tonight. For the small size of this turbo it is really something else. My car is a totally different animal now, on only 93 octane the Si is a solid ripper, I don't think I would benefit from running ethanol as there would be no traction lol at least on the street. I think this will be a killer setup at the track, cannot wait until my next time at Watkins Glen! Kudos @VargasTurboTech you guys brought the goods!
 

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Happy to hear it sir! :cool::cool:
 

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Revision 3 uploaded, data logging tonight. For the small size of this turbo it is really something else. My car is a totally different animal now, on only 93 octane the Si is a solid ripper, I don't think I would benefit from running ethanol as there would be no traction lol at least on the street. I think this will be a killer setup at the track, cannot wait until my next time at Watkins Glen! Kudos @VargasTurboTech you guys brought the goods!
How much power you think it's making on the 93 tune right now?
 
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How much power you think it's making on the 93 tune right now?
Not sure, @Neddih dynod 300hp and 314tq if I remember correctly. I would think around the same.
 

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Not sure, @Neddih dynod 300hp and 314tq if I remember correctly. I would think around the same.
Yup thats right. You might be making a bit more than I did even considering the intake manifold and throttle body
 


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Yup thats right. You might be making a bit more than I did even considering the intake manifold and throttle body
[/QUOTE

Possibly... One day I'll get to a dyno lol.
 

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Not sure, @Neddih dynod 300hp and 314tq if I remember correctly. I would think around the same.
After reviewing other turbos & seeing VTT GC(+) being on the bigger side & refined as they are, you could be pushing closer to 320whp on a 93 power tune. 360whp on E30 wouldn't be a stretch with your mods, either.
 
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After reviewing other turbos & seeing VTT GC(+) being on the bigger side & refined as they are, you could be pushing closer to 320whp on a 93 power tune. 360whp on E30 wouldn't be a stretch with your mods, either.
For sure, having a reliable 300+ tq/hp on 93 is good for me. There was a comment about the turbine port to wastegate opening being very close on this turbo which would be prone to cracking but upon looking closer at my pictures the rv6 turbo has even less material and I have not seen any cases of cracking so far, so I don't feel much need to worry about the GC turbo cracking, of course with the right amount of abuse anything can happen.

I am really happy with the low end response with the GC and it is no slouch at higher rpms either. All around feels great.
 

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For sure, having a reliable 300+ tq/hp on 93 is good for me. There was a comment about the turbine port to wastegate opening being very close on this turbo which would be prone to cracking but upon looking closer at my pictures the rv6 turbo has even less material and I have not seen any cases of cracking so far, so I don't feel much need to worry about the GC turbo cracking, of course with the right amount of abuse anything can happen.

I am really happy with the low end response with the GC and it is no slouch at higher rpms either. All around feels great.
All the big drop-in turbos are limited by turbine size because of the proximity to the wastegate. Limited to ~47.1mm inducer, ~41.4mm exducer. Looking forward to seeing PRL's turbo power capabilities (Due to being one of the biggest drop-in turbos, on paper) & reliability, especially compared to VTT GC+ & 27Won W2 BB.
 

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After reviewing other turbos & seeing VTT GC(+) being on the bigger side & refined as they are, you could be pushing closer to 320whp on a 93 power tune. 360whp on E30 wouldn't be a stretch with your mods, either.
He would be around there for sure, my car on e30 dynod 340whp/360wtq and maxes out the fueling.
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