I asked about this as well and apparently there are two kits being tested over this weekend. One APS 3071 and an APS 3037. Both cars are supposed to have cams, hi-flow cat / test pipe, etc. Hopefully, they'll post some results in the next few days or so.

Mark

 

You mean ATP?

Noob.

 

Nada 3071 basemap tune and install today, 35R basemap tuning Sat, 3037 basemap tuning Monday - All cars are Vishnu 1+ Fun stuff

 

Any updates on the 1+ car with the .63 3071?

 

Not yet the mechanic is 90% done with the install but had to leave Tuning tomorrow

 

How does the ATP downpipe fit to the high flow cat? Is the adapter piece ready to go?

 

David,
Keep us posted! I just got in my ceramic coated manifold today, so I'm starting install tomorrow after I finish moving the battery out of the engine bay. I'm hoping to have everything up and running by sunday night, except for the xede map !!!!
Did my rear undertray ship?

Smog,

I bought an extra 3" V-flange ring and hacked the ATP two bolt flange from the ATP downpipe so I can still swap between the vishnu cat and vishnu test pipe. V-flanges don't require a gasket nor is their position fixed like on a 2 bolt flange, allowing some additional adjustment.

 

Don't tell us Brandon is still not finished w/ the 3071 install???

 

Any updates on testing?

 

hey i was wondering if the 3071 atp kit will work with a buschur racing front mount and also there turbo back system since u guys sell the adapter peice to attach to the high flow cat.....thnx! and shic how much r u selling the atp 3071 kit installed for ( u can pm me if u like)

 

Hi! everyone, I'm the new ATP GT3071r Kit upgrade, I've the Vishnu stage 1+ setup, my #s is about the some with the guy from oc. I've a little more power in the midrange, but topout about the same at 323.3 on the DD dyno. and that's with 100 octane gas. With 91 octane pump gas it's about 300hp. Vishnu will post graph soon...

 

Hi guys,
Sorry... been busy at the shop. Yesterday was another looong day. We tuned an ATP 35R. Like the other cars, it had cams and a high flow cat. On pump gas, it did 310whp at 20psi which is spot on with what I expected it to do on 91oct. On 100oct, it did 380whp at 25psi. If it were catless, expect both numbers to be approx 20whp higher.

Conclusions so far:

The ATP 3071 is a small turbo. Not much bigger than the factory 16c. On the road, it'll hit 20psi by 3500-3600rpm. Maybe 200-300rpm earlier if equipped with a test pipe. It seems to reach an airflow limit around 320whp with boost tapering off to no higher than 20psi by redline. Other than that, it's a really good street turbo that offers a very potent midrange and good spool up.

The ATP 35R, on the other hand, is quite laggy on Stg 1+ car, not making full boost until 5000rpm with a cat. This is a quite bit laggier than the 35R on my car (running or custom tubular set-up) which makes full boost by 4000rpm. Of course, this is also with headwork, IC, intake manifold and test-pipe so it's not apples to applies. On 100oct, it made an easy 380whp without breaking much of a sweat. The only other issue I see with it (besides boost response), is what seems to be a top end restriction (beyond 6500rpm). It seems to roll-off way up top which may be due to the factory cast manifold. For comparisons sake, the tubular GT3037 set-up on our car (before we did headwork, manifold, etc,.) made the same power on pump gas but nearly 30whp more on 100oct, with most of that advantage coming in beyond 6500rpm. It also spooled up like the 3071. So yes, there does seem to be a compromise by using a cast manifold. I suspect with c16, an intercooler upgrade and a test-pipe, the GT35 will proved much improved boost response and be capable of making 430-450whp. For Dynojet equivalence, multiply numbers by aprox 1.15

Today and tomorrow, we'll be installing and tuning an ATP 3037 which I have the biggest hopes for. Some spool much quicker than the 35R without giving up much top end (since I think the primary top-end restriction is the manifold and not the turbo in the case of the GT35R).

That's it...

Regards,.
Shiv, under Dave's account...

 

I want to thank Shiv and David at Vishnu for the fantastic job they did yesterday
on my car. Due to some mechanical issues( pos RR modified type s bov and the way my installer hooked up my wastegate solenoid) it took longer than expected.
But it was worth the wait. My application is drag racing, but Shiv has some doubts
due to the waay laggy boost in 1st gear. I will report back in a few weeks when I make it out to LACR for testing. Oh, Shiv took me out for a test drive in my newly
tuned evo. Good thing I had not eaten all day. This man can DRIVE! Again I want to thank Shiv for his patience, professionalism, skill and great price! One of my buddies from the SVT community would always tell me a good tuner is worth is
weight in gold. Hey Shiv, if you weigh 150 lbs , your worth 948k .

 

No probs it was great hanging with you all day man Cant wait to see the results on the track.

 

Whew still a bit of torquing to do on the 3071- clutch and tuning tomorrow