Hey guys,

Just wanted to give you guys a quick glimpse of a 42lbs turbo we are testing. This turbo is going to be great for you guys wanting stock turbo spool-up and boost response. The turbo is based off the 16G platform with a larger 42lbs compressor wheel. Unlike the larger 20G-5/6, this turbo has a much smaller exducer diameter which means better response and spool up but better midrange than the stock turbo (even the EVO IX!).

Here's the graph on ~98 octane mix @ 1.8 bar. Was breaking 355ft/lbs on a few pulls, but we were getting an occasional misfire in the midrange so we backed it off a bit. More details to come

For reference a stock turbo at @1.8 bar will do about 310-315ft/lbs and about 320whp. While the top end is not substantially difference, there is a huge difference in area under the curve.

Sorry our scanner is out of commission


Cheers,

Gary
Gruppe-S

 

I'm missing the no loss in spool part. Maybe if you subtracted 500 to 800 rpm off that spool...

 

It looks laggy to me too. Couldn't you do those numbers on a stock turbo with 98-100octane? Correct me if I am wrong but I remember your MR made like 320+ whp/tq on their Mustang.

 

Nice, 300whp at 4500rpm and holds to 7000rpm - I bet it would be fun un the street.

Anyhow, is that an VIII or IX you put that on?

 

Hi,

Not really, it's a bit laggier because it's tuned on an MBC. You will see about 500RPM improvement with EBC tuning and/or Mivec cars. I'll get a delta of an MR in a sec. On an EVO 8, the best power made on a 16G was about 325whp and 310ft/lbs - this I believe was also on a hundred octane mix. While the wheel HP difference is small on the turbo, the midrange torque increase is substantial. This is pretty much as expected with a 42lbs wheel, it's similar to the results seen on the Subarus using the TD05 turbine wheel and upgrading the compressor.

Cheers,

Gary
Gruppe-S

 

Hi Tom,

I over-laid your car with mine. Since you were on the stock 16G with 272 cams, and I remember your car pulled pretty hard with a decent spool. I think it's a fair comparison Did you get a new car man?

Mods on the car for 345ft/lbs -
Helix 272 Cams, Helix Cam Gears, Exedy Stage 2 clutch, Helix 5-pc Turbo back, MBC, 42lbs Turbo, reflashed.

I took a 996 turbo from a rolling start in the car, it's a blast to drive on the street .

Cheers,

Gary
Gruppe-S

 

How would this compare to the TME turbo?

And when will you guys be able to release a pricing on this?

 

My white Evo was tuned on 91 with mbc. You might want to use the below graph that was tuned with 100 to better demonstrate your new turbo potential. The tq is pretty high on your turbo but then it could just be a high boost spike since the curve drop off significantly. Also, by running 98-100 octane...you prob running an aggressive timing to improve spool. I'd be interested to know who tuned this car.

 

What's a "high boost spike"?

I agree, the MIVEC cars with an EBC will outspool an non-MIVEC / MBC car any day of the week. The comparison graph you have provided is apple to oranges, a more accurate comparison of spool would have been your 2005 non-mivec car. With an MBC turned up the boost curve of the car is not substantially altered as would be the case by increasing the DC of an EBC. Furthermore power curves are substantially affected by camshaft duration and timing, therefore it is a better comparison to compare non-MIVEC cars against other non-MIVEC cars with 272 duration camshafts.

The 42lbs car (345ft/lbs) was tuned at 1.8 BAR, at peak VE it is 1.85 bar of boost pressure, and drops off substantially as is expected on all TD05 based turbochargers, including the 20G-6/5.

As for running "aggressive timing" to improve spool, yes naturally. That said, the car does NOT knock on the dyno or on the street. Actually the main problem with running aggressive timing to improve spool-up on high boost EVO's is actually the mis-fire problem associated with it, and this car is no longer mis-firing.

Cheers,

Gary
Gruppe-S

 

Gary, that car is a 05 non-mivec with 272s

 

FYI, thats Bryan's Evo 8 MR....not my Evo 9. You should have that graph in the system as well. Most well tuned Evo9 with TBE and MBC running 100 will prob hit 320whp/330tq+ I have seen an EIP tuned Evo9 on a mustang hitting 320whp and 325tq on 91 with no knock.

As for the high boost spike, I was referring to the turbo hitting 27psi and taper off quite a bit. With that said, it will create a very nice peak torque number to brag about. However, 340+ is pretty impressive tho.

 

Hi,

It's definitely superior to the TME, as it flows more air, but has the spool / response characterstics of a the stock 16G. Basically this is a great turbo for guys wanting more power but not wanting to put up with the lag of larger turbos. Should be in the $800 range.

Cheers,

Gary
Gruppe-S

 

Or an $800 replacement for someone whose 16G VIII died.

Does it fit with standard actuator?

 

500 rpm earlier spool with an EBC over an MBC???? MMMM, k. I haven't seen that phenomenon before, and I hit 300wtq (on the upslope) at 3300rpm (Dynojet with no load that spools slower and with stock cams) - this one hits 300wtq at 3800rpm. I use an MBC, so it seems to have a significant loss in spool over the stocker. That doesn't mean it's not a good turbo, especially for my purposes (circuit), but claiming no loss in spool seems a stretch...

 

Interesting.

Maybe we should overlay this STOCK 2005 TURBO with this 42lb turbo dynosheet.

Somehow I am not seeing the benefit.

This was done a year and a half ago.