This is a follow up of our original TiAL Billet Alpha 3071 dyno results thread found here - https://www.6speedonline.com/forums/996-turbo-gt2/222123-usp-motorsports-tial-alpha-3071s-billet-turbo-system-dyno-results.html . If you don’t feel like reading the first post, here are the cliff notes: We installed our first TiAL Billet Alpha 3071 kit on a customer’s 996, results were 669whp, and 607wtq (video and dyno graph in other thread). We were slightly displeased with the spool time and overall power, even though they were still very good, but we knew there were 2 very big restricting factors not allowing this setup to see its potential... The 2.5” catted Tubi exhaust, and factory turbo inlets. So as previously promised, we fixed those issues with our turbo inlet pipes, and our 3” performance exhaust system and just as we expected, the gains in overall power and power under the curve were substantial to say the least. Final results, the car is now making +82whp and +152wtq more peak power!! Power under the curve showed improvements of over 160whp and 170wtq at some points in the RPM band!! The car is a complete different animal. I was expecting big gains, but this is amazing. I have dyno graphs overlaid below with the original dyno after installing the TiAL kit, then after adding the USP turbo inlets, then after adding the exhaust on top of that. One of the big restricting factors in the exhaust, besides the fact that it was a 2.5" catted system, was that the outlet flange was only 3.0". The TiAL turbos require a 3.170" exhaust outlet flange!! So the Tubi system was blocking ~30% of the wastegate outlet!! This won't actually restrict power, but will cause boost spikes and makes tuning more difficult. I can't vouch for anyone else, but our exhaust is compatible with the TiAL Alpha 30 kit outlet flange. We've had our system in the works for sometime now but due to being to busy at the shop, our R&D time is always superseded by cars in the shop. However, after much needed time spent on this subject, we've finally had time to develop a muffler design that fits our needs and is efficient for making max power!!





On to the dyno graphs. *Important - Notice not only peak hp gains, but more importantly check the power under the curve during spool up. HUGE gains, which makes all the difference. When building a fast car, its NOT ALL ABOUT PEAK NUMBERS! Even though these were pretty impressive .




First, here are the direct comparisons of the TiAL kit first installed with factory inlets and Tubi 2.5" exhaust. The next up is with the USP turbo inlets and Tubi exhaust, and last is with the USP turbo inlets, and USP 3" performance exhaust. NOTICE HOW MUCH FASTER IT RAMPS INTO BOOST WITH THE BOOST GRAPH AT THE BOTTOM!! +82whp and +152wtq peak power with USP turbo inlets and exhaust!!







Next is the same run as above in torque.. again, check spoolup time and power under the curve!!!







This next 2 graphs are before and after the USP inlets on LOW BOOST, Tubi exhaust. NOTICE WITH STOCK TURBO INLETS, THE CAR IS ON MORE BOOST MAKING LESS POWER!! Boost controller turned off for both runs, exact same boost request.







Same graph as above, torque shown







And for the finale of the dyno graphs.. my 996TT K24/18g gragh vs. the TiAL Billet Alpha 3071 kit. Remember, my car trapped 146mph in the 1/4 mile and went 202 in the standing mile!!



Results: The TiAL kit made 39whp more PEAK HP, and 86whp more at 7400 RPM, and slightly faster spool up!!







Needless to say.. these are in the near future for my 996. Can you say 150+ traps




Here are some shots of the car in the shop, on the dyno..













The USP turbo inlet pipes!!










USP 3" performance exhaust









Exhaust will be available for purchase in the very near future. PM me for details.

Thanks to Tony@EPL for all the great custom tunes he has done on short notice.

Dyno video http://www.youtube.com/watch?v=ep5W3qH0vnA

 

good stuff! interesting to see the gains of the inlet pipes at even the lower boost levels

 

Great R&D Chris but your K24/18G is another animal on its own

 

Nice results and very well documented!

I think I can speak for us all, when I say that's exactly the kind of information one needs to make a informed buying decision.

What A/R is the hot side of the 3071?

 

Now that's what I'm talking about back to back testing & dynoing.

Keep up the damn good work, Chris!!!!!

I'd love to see more details/pixs/specs on your exhaust?

 

well done,

 

chris .. thats very great package ..
congraatz

 

Damn.. Great thorough Documentation.. I wouldnt expect anything less from Chris.. Hes been doing this type of stuff on Euro's for 10+ years.. Proper before and after testing is the only way to show what is working and what is not.. Doesnt surprise me that the Tubi Was JUNK.. Nice work!!!

Mike

 

That's awesome work Chris, I see 3" piping in my future.

Ken

 

Very nice results Chris and very good explanation of the dynos,thanks and congrats on your excellent work.

 

Hell yeah, awesome!

 

Awesome results. This is very interesting to read. It's nice to be able to see all of the charts overlaid as well

 

Sorry if it was mentioned -- but was this on E85 still????

Regardless, huge congrats.

 

Yes on e85.

 

nice results! i have almost the same exact set up as far as intake pipings, markski's 3" race exhaust, and 3071. this makes me. i guess this would be equivalent to running c16 on 26psi of boost? what clutch is this car running? great break down by the way