SuperL98

Welcome Bryan .... I hoped you might show up over here.
Sorry about the "Infamous" part, but you know after so many years since the original announcement, it is

Bryan Rogers

Wooopsy!

I meant TPI (edited post)

I was reading another thread before I posted and I got my
TPI, LT1, ZR1, Z51, & Zo6's all confused............

Aardwolf

88BlackZ-51

Enough talking about it. Let's see pictures and results!!!!!!!

rel3rd

88BlackZ-51

I know you agree. I see nothing mentioned on there website. I have a funny feeling it will look like the old intake that was on the Firehawk.

Bryan Rogers

I've asked the President of BBK about posting pre-production photos of the prototype intake, but he wants to be sure we don't get ripped off before we even hit the starting gate ( it happens all the time). So for now, the intake photos will not be posted until he says "go".

However, I am glad to share all of the details of the dyno info with you, the other forums, and those who are interested.

I posted the dyno graphs here as JPEGS, but they are "pending approval"

While I wait for them to be approved let me fill you guys in on the test car, and test procedures.

88 IROC
BONE STOCK
Stock air box and auto parts store filters
Auto Trans
149,000 miles
8° timing
9th injector eliminated for tests.

Car was set up and allowed to cool overnight for both baseline, and BBK intake tests.
75° air temperature in test facility.

Runs were made in D, starting @ 65 mph (approx 3,100 RPM) which is the lowest speed at which I could apply full throttle without the Trans downshifting.

I run back to back dyno runs on our Dynojet until the power starts dropping off, and then I save the BEST overall # of all of the runs.

With the stock TPI set-up, the engine did not want to pull past 5,000 without a struggle so I stopped the stock intake runs there.

Obviously, this intake is not designed for stock motors, but we always do our initial testing on cars that are as stock as possible to ensure that fitment will be correct.

Now before I continue, I would like to make sure that everyone reading this understands the difference between PEAK dyno #'s and OFF-PEAK.
If you don't know the difference, please ask so I can explain it. It's important to know the difference when looking at dyno #'s to get a full understanding of what the "real" gains are, which are usually in the OFF PEAK portion of the charts.

OFF-PEAK PERFORMANCE-
With the BBK intake, the engine did not struggle until 5,500 where I stopped the runs. From 3,500 RPM the BBK kept pulling as the stock unit dropped off. @ 5,000 RPM (which is the highest RPM I can compare the proto to the stock unit) there was a gain of 52 Ft-lbs, and 50 H.P.

PEAK PERFORMANCE.
I found that the PEAK H.P. was 9 H.P. greater while the peak TQ was down 16ft-lbs which is very typical for a short runner intake on a stock motor.

On the very bottom end (1,500-2,500) I would expect that a STOCK engine could take a 15 -20 H.P./ 20 Ft-lb hit with this type of intake, where a built motor would be able to take advantage of the short(ish) runner design and make more power and torque than stock down in the low end.

Clearly, a heads/cam, blower, or stroker motor would eliminate the low end loss and make even more mid range and top end gains than what is posted here, but again, this is the initial testing.

Bryan

Bryan Rogers

HMMMMMM.

I loaded those pics 2 hours ago and they are still pending approval.

Good thing I wasn't posting pics that I needed input on for an emergency self-performed surgery......

I'd already be dead.

Aardwolf

Sometimes it takes till the next day. Photobucket.com might be better, the storage space here is small.

Aggravated4life

Thats what I like to hear or see...a nice solid 50 HP increase.Its along the lines of the LT1 intake in Power Gains.Depsite engine changes,on an LT1 motor,the biggest jump to 300 HP over the old 250 HP L98 was the intake design change.

If this intake works out right,and is in the affordable zone,I forsee alot of intake swaps happening.The other intakes were priced out of the market by too much money,and alot of guys,like me,were looking for them used, and was still expensive then.

Wishing you guys best of luck to bring the product to the market after all this time.

Bryan Rogers

HORSEPOWER

TORQUE


The graphs are capable of pinpointing the exact RPM where the biggest gains are in the run.

The break downs (posted below) are only capable of narrowing it down to each 100 RPM.

On the graphs, the 50 H.P.& 52 ft-lbs were observed @ 5,074 RPM.
Here in the breakdown it shows 48.13 H.P. & 50.56 ft-lbs @ 5,000.

Dynojet Research Inc.
Run Name: C:\DynoRuns\BBK R&D\TPI INTAKE TESTING\RunFile_009.drf
Run Title: TPI BBK INTAKE PROTO
Run Notes: STOCK TPI
BBK TPI INTAKE PROTO
FRESH TUNE UP
Run Date: 6/19/2007 8:59:26 AM
RunFile_009.drf: 76.82 °F 28.87 in-Hg Humidity: 28 % SAE: 1.03 Average Gear Ratio: 39.22
s RPM x1000 hp ft-lbs
0.32 2.90 143.50 259.92
0.82 3.00 152.67 267.28
1.29 3.10 161.79 274.11
1.79 3.20 168.20 276.07
2.26 3.30 174.66 277.98
2.78 3.40 179.91 277.91
3.32 3.50 182.91 274.48
3.85 3.60 188.12 274.45
4.37 3.70 192.00 272.54
4.90 3.80 196.40 271.45
5.40 3.90 200.04 269.39
5.94 4.00 202.52 265.91
6.47 4.10 204.45 261.90
7.01 4.20 205.99 257.58
7.56 4.30 206.92 252.73
8.12 4.40 208.89 249.35
8.71 4.50 208.06 242.83
9.30 4.60 205.76 234.93
9.92 4.70 202.90 226.73
10.58 4.80 200.13 218.98
11.26 4.90 195.86 209.94
11.96 5.00 191.94 201.62
12.71 5.10 184.40 189.90
13.50 5.20 179.20 181.00
14.38 5.30 169.66 168.13
15.34 5.40 158.31 153.97
--------- --------- --------- ---------
MAX: 15.34 5.40 208.89 277.98
MIN: 0.32 2.90 143.50 153.97
--------------------------------------------------------------------------------
Dynojet Research Inc.
Run Name: C:\DynoRuns\BBK R&D\TPI INTAKE TESTING\RunFile_004.drf
Run Title: TPI STOCK
Run Notes: STOCK TPI
FRESH TUNE UP
Run Date: 5/1/2007 1:25:16 PM
RunFile_004.drf: 79.40 °F 28.77 in-Hg Humidity: 31 % SAE: 1.04 Average Gear Ratio: 39.13
s RPM x1000 hp ft-lbs
0.18 3.10 N/A N/A
0.67 3.20 180.72 296.62
1.18 3.30 184.82 294.15
1.68 3.40 188.97 291.90
2.20 3.50 191.39 287.19
2.72 3.60 193.03 281.61
3.24 3.70 195.99 278.21
3.77 3.80 198.28 274.05
4.30 3.90 199.00 268.00
4.85 4.00 198.82 261.06
5.43 4.10 195.53 250.48
6.01 4.20 193.42 241.87
6.63 4.30 191.86 234.35
7.26 4.40 189.33 226.00
7.91 4.50 186.38 217.53
8.61 4.60 178.86 204.22
9.38 4.70 172.28 192.52
10.12 4.80 169.09 185.02
10.99 4.90 155.23 166.39
12.00 5.00 143.81 151.06
--------- --------- --------- ---------
MAX: 12.00 5.00 199.00 296.62
MIN: 0.18 3.10 143.81 151.06

88BlackZ-51

How long are these runners?

GRX

Very exciting

Bryan Rogers

Right @14" measuring from the mouth where the tubes connect to the upper manifold and down to the cylinder head.

88BlackZ-51

Seems like a shorter runner then the stock TPI unit. Are you going to post some pictures? 14 inches isnt bad at all. Kinda wish it was a little shorter however.

Aggravated4life

I agree there,I thought it would be alot shorter.14 is a bit long yet A 50 HP/TQ gain over a stock tired iron head L98 with high mileage is still pretty good for an intake swap though.

With all the other intakes out there,I guess theres not too many ways to reinvent the TPI set up without copying someone elses manifold.Hope this one holds its own.

Bryan Rogers

I really want to post the pics, but the boss says "not yet". Plus there is more testing and some modifications to try different stuff yet to be done.

Why do you wish it was shorter?

If it works great AND is affordable, does the actual runner length (in inches) make or break it for you?

Pelleplutt

14 inch is just about perfect ,very close to a LS1 intake.
The interesting is the design/flow on the 1-2 inches that is close to the head.
Lets hope that the big HEI fits.

Any real time plan on this,6-12 months ?

Pelle
-90 vert ZF6

88BlackZ-51

I was hoping the runner length was more like the LT1/LT4/TPIS Miniram intake. 14 isnt too bad however.

johnwayne

I agree i was hoping so to. is a one peice or two?