Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
SVT Shelby GT500
Bigger blower = more power?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Klaus" data-source="post: 15955138" data-attributes="member: 190070"><p>I have about as like for like comparison as there is. Today I switched from VMP gen2 to gen3. The designs are very similar, with one being larger than the other. Cannot speak to differences in case dimensions or flow, but the similarity is definitely closer among these two than any other comps. </p><p></p><p>Motor is 2012 5.4 set up was exactly the same for both: ID 1000s, VMP twin 67 TB, 128 CAI, VMP BAP, kooks long tubes and full exhaust. I ran a 2.4 pulley on the gen 2 and a 2.8 pulley on the gen 3. </p><p></p><p>I do not have jpeg of graph, but peak HP was 662 on the gen 2 and 681 on the gen 3. I lost a tiny bit of torque going to the bigger blower, but the butt dyno gives indication that gen 3 is definitely stronger. It is more responsive and boost comes on faster. </p><p></p><p>Both were at 17 lbs of boost. I do not have data log in front of me but we did have to pull timing on the gen 3. Air temp was 14 degrees hotter when I ran the gen 3 although air temp at blower inlet was only 6 degrees warmer. While I had 147 CAI, I could not run it because we could not get the big KB TB to fit onto the gen3. It was clearly choking with the smaller TB and CAI and would have responded very nicely with larger of each. </p><p></p><p>So, conclusions on as like for like comparison as I can think of? Larger blower at same boost does = more power. The curve was smoother and it is clearly running more efficiently. Not by much though. Honestly not by enough to matter with current set up. That said, the potential with the larger blower with larger CAI + TB + E85 is FAR greater than it is with smaller. Nevertheless, the data is what it is and larger blower was +20 WHP.</p></blockquote><p></p>
[QUOTE="Klaus, post: 15955138, member: 190070"] I have about as like for like comparison as there is. Today I switched from VMP gen2 to gen3. The designs are very similar, with one being larger than the other. Cannot speak to differences in case dimensions or flow, but the similarity is definitely closer among these two than any other comps. Motor is 2012 5.4 set up was exactly the same for both: ID 1000s, VMP twin 67 TB, 128 CAI, VMP BAP, kooks long tubes and full exhaust. I ran a 2.4 pulley on the gen 2 and a 2.8 pulley on the gen 3. I do not have jpeg of graph, but peak HP was 662 on the gen 2 and 681 on the gen 3. I lost a tiny bit of torque going to the bigger blower, but the butt dyno gives indication that gen 3 is definitely stronger. It is more responsive and boost comes on faster. Both were at 17 lbs of boost. I do not have data log in front of me but we did have to pull timing on the gen 3. Air temp was 14 degrees hotter when I ran the gen 3 although air temp at blower inlet was only 6 degrees warmer. While I had 147 CAI, I could not run it because we could not get the big KB TB to fit onto the gen3. It was clearly choking with the smaller TB and CAI and would have responded very nicely with larger of each. So, conclusions on as like for like comparison as I can think of? Larger blower at same boost does = more power. The curve was smoother and it is clearly running more efficiently. Not by much though. Honestly not by enough to matter with current set up. That said, the potential with the larger blower with larger CAI + TB + E85 is FAR greater than it is with smaller. Nevertheless, the data is what it is and larger blower was +20 WHP. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
SVT Shelby GT500
Bigger blower = more power?
Top