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4.5" Dynospeed Racing intake dyno results

60K views 192 replies 56 participants last post by  Lt1z  
#1 · (Edited)
Josh@Dynospeed Racing spent some time testing intakes on the dyno last night with his car which is modded like many cars on here:
2011 ctsv A6
Forged LSA 6.2, stock block and stock crank
Trickflow 255's out of the box
Ported supercharger 102mm
Stage 2 camshaft
2.5/8.6 pulley combo
American racing 1 7/8, off road x pipe, stock axle back
ID 850
Dynospeed heat exchanger
Jabsco pump
NorCal ice box
Nitrous express
Stand alone fuel cell

All testing was done on the same day, May 1, 2014 in Memphis TN. There were no changes to timing and all testing done on the same tank of gasoline. Only the MAF was rescaled when changing intake size and TB parameters changed when increasing TB size.

We tested the car baseline with a Mamo ported LS7 TB and a popular 4" intake with 12 inch filter (blue line on graphs 647/565).
Next was the Mamo ported LS7 TB and the new 4.5" inch Dynospeed Racing intake (red line on graphs 662/601).
Finally was the NW 102 TB and the new 4.5" Dynospeed Racing intake (green line on graphs 689/627).



It picked up 18/36 at the rear wheel just switching from the 4" to 4.5" intake with the same Mamo LS7 TB.


Since most who switch from the stock style TB to the 102 upgrade their intake at the same time, we made a graph of the Mamo ported LS7 TB with 4" intake (blue line) vs the NW 102 with 4.5" Dynospeed Racing intake (green line):



It picked up 42/62 at the rear wheel going from the Mamo LS7 with 4" to NW 102 with 4.5" Dynospeed intake

I'll say, we're pretty stoked about the results.
 
#3 ·
Ray and Josh,

THANK YOU for posting this info. I tried to get New Era to test with the 87 or 90mm TB, but no dice. Is Josh selling these intakes?

I just got off the dyno this week, not sure if I'm ready to go down and make more changes, but perhaps when I put the ported blower on.

Thank you both!
 
#5 ·
I know everyone will want to see pictures of the intake, so here you go.
In the buff:


On Josh's car while on the dyno:




It should fit with a modified stock air box. I plan to install it that way on my car and post pics.
 
#7 ·
drool
 
#11 ·
Very nice work!
 
#14 ·
Great scientific approach and hard numbers for people to make a proper decision from. I don't know who said 102s don't make power but those cunts can eat a bag of dicks!
 
#20 · (Edited)
A 102mm TB only made 2hp and 2tq on my car (TPiS brand) :( I don't understand why I didn't get more power. No changes made at all other than swapped out the ported stock throttle body for the 102 and did another pull. That was with a 4.5" intake and 102mm ported snout/blower. Just doesn't make sense to me, I took it right back off while still strapped to the dyno and then sold it. Sure wish I could have picked up 27whp from adding the bigger throttle body.
 
#22 ·
I had the blower snout opened up from a regular port to a 102 port, added the 4.5" intake coming from a New Era 4" and ZL1 lid installed. The car was then retuned with that setup in which it went from 637whp the last time it was on the same dyno to 653whp that time both SAE. Before adjusting the tune we went to do a baseline and let out mid rpm band since it was trending lean, added fuel, adjusted the timing (think added .5 degrees) resulting in the 653. The tune was complete at this time, we then added the 102 while still on the dyno like I said and got 655whp 20 minutes later or whatever the exact time was for myself and the tuner to whip the stock ported throttle body off and get the new one on.

So to answer your question, before doing the throttle body swap everything was adjusted.
 
#23 · (Edited)
So you tuned it for the ported LS7, made a baseline and then ran the 102 20 min later without adjusting the MAF or TB area? That's why you didn't make any power, you would have been running rich.
How do I know this? Because when we took the ported LS7 off Josh's car and installed the 102 with our 4.5 intake, it ran pig rich and made no power. Once the MAF was properly scaled...boom, the 102 and 4.5 combo made 27 rwhp and 26 rwtq more than our 4.5 intake with ported LS7 TB.
 
#29 ·
Price?
 
#32 ·
Is dynospeed selling these directly? Anyone know how much??
 
#34 ·
^ thanks! What filter does it come with?
 
#36 ·
I just want to point out that the gains aren't just at peak hp. The area under the curve is huge with impressive gains below 5000 RPM. That should translate to better 60' times.
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#39 ·
I wish more people would look at what you are saying here.

We are in the peak torque area so much more than peak hp, but it often gets overlooked.

I think this is where real acceleration occurs on our cars, for the most part, since we are in this rpm range longer.
Think of what happens when you are at peak hp. Add a few hundred rpm, then what?

Boom---Trans shifts to an area far below peak hp but close to peak torque, and you keep accelerating.

Otherwise, it has to fight to gain speed and rpm.

This is where the ported heads show the most gains, IMO, and that's often overlooked.


Sent from my iPhone using Tapatalk
 
#37 ·
Does the filter end up in the drivers brake duct? Would i need to remove that duct tube?
 
#38 ·
For best results yes, either remove or trim the brake duct. Once that's done after the initial install, it's very easy to install and remove the intake from under the hood without removing the inner fender liner which makes cleaning the filter much easier. If your brake duct is already out, you can install the whole intake from under the hood.