Sponsors. 
What gains from Just an EWP?
What gains from Just an EWP? I want to know what gains you can get from just an Electric Water Pump. I tried the search and found nothing useful. Anyone do a dyno before and after an EWP?
Sorry, never dynoed with just the EWP change. I did have a comparo thread where I swapped in a 90/90 and an EWP. I would say with just the water pump about 8-10HP. You could check out the thread and might come up with your own conclusion.
https://ls1tech.com/forums/dynamometer-results-comparisons/583142-fast-90-nw-90-meziere-ewp-gains.html
https://ls1tech.com/forums/dynamometer-results-comparisons/583142-fast-90-nw-90-meziere-ewp-gains.html
Originally Posted by davered00ss
I saw that post. Thanks. I think most of those gains could be the 90/90.
I expected big gains with mine, but they were never more than 3 rwhp, some dynos showed 0 rwhp gain. What I do like about it is the ability to give me fast cool downs for dyno tuning or hot laps at the track, plus I'm sure it has a small positive affect on fuel economy. But from a $ per hp gained, I'd have to list it toward the bottom of the mods I've done.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Trending Topics
Whether I gained a lot with the pump I'm not sure but there are adventages to it. I didn't really get the EWP for the HP cuz I didn't expect much. I mostly got it cuz I have snapped a few serpentine belts before and almost cooked the engine. With the EWP if it should snap again at high speeds the cooling system would remain operational and keep the motor from overheating. That and it looks really cool. The "natural" color option makes the EWP match nicely with the Nick Williams TB.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Senior Member
iTrader: (3)
Joined: Apr 2006
Posts: 6,524
Likes: 1
From: Western Burbs of Detroit
I had my EWP and ASP u/d pully done at the same time as my AFR 205 heads. The pkg added 60 rwhp. Mostly from the heads obviously. The one thing I loved was that when I left Texas, I drove for 8 hours all expressway before filling up. Then after filling up made back to my house in Michigan with gas still in the tank. 2 tanks of gas to go 1200 miles. SWEET ! It took 2 1/2 tanks to make it to Texas totally stock (lg pro long tube headers) Great for gas mileage, and cooling off a hot engine. JMO
Originally Posted by Patrick G
I expected big gains with mine, but they were never more than 3 rwhp, some dynos showed 0 rwhp gain. What I do like about it is the ability to give me fast cool downs for dyno tuning or hot laps at the track, plus I'm sure it has a small positive affect on fuel economy. But from a $ per hp gained, I'd have to list it toward the bottom of the mods I've done.
I did a back to back test on my V. The EWP showed a 4 rwhp increase with no additional tune changes. We picked up another 6 rwhp since we now had the ability to control the temps and tune for it. So, in short, a total of 10rwhp from the EWP and tune.
I was always under the impression that when putting on a ewp that you were gaining back lost hp like it take 5hp to run the pump that your gaining back the 5hp and a little bit extra is that how that works i know by putting that in that you delete running that system not useing a belt
There's no such thing as a free lunch. If it takes 1 hp of engine power to run the stock water pump, then I promise you it adds a minimum of 1 hp of extra drag on the alternator to keep the EWP charged. Where you'll see gains will be in the high rpm ranges. Where a stock water pump will take several hp to turn at 7000 rpm, the EWP is still only taxing the alternator to the tune of 1 hp.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by Patrick G
There's no such thing as a free lunch. If it takes 1 hp of engine power to run the stock water pump, then I promise you it adds a minimum of 1 hp of extra drag on the alternator to keep the EWP charged. Where you'll see gains will be in the high rpm ranges. Where a stock water pump will take several hp to turn at 7000 rpm, the EWP is still only taxing the alternator to the tune of 1 hp.
here is the url to ls1howto.com electric water pump dyno performed on thunder racing's dyno. http://www.ls1howto.com/howto/fbody/...pics/_dyno.jpg
11 Second Club
Joined: Feb 2002
Posts: 639
Likes: 0
From: Norcal
No dyno numbers, but my girl friends car was able to beat her best Et in the summer time with the EWP vs no EWP and a great -DA day in Dec.
Not by much but, lol 11.359 @ 118.6xx 1.57 60* v 11.360 @ 120.0 1.53 60 FWIW.
Not by much but, lol 11.359 @ 118.6xx 1.57 60* v 11.360 @ 120.0 1.53 60 FWIW.
