Thread: Who's running Et137 +4mm?
07-19-2013, 08:14 PM #1
Who's running Et137 +4mm?
Ive read different threads on the et137+4mm and want to know what kind of boost u guys are seeing at what rpm, what other scer u have ran and do u like the +4mm. I have a brand new 137+4mm and before I use it I would like some feedback. It will be in a conversion and I want to make sure it will be enough because I wanted the 68-140 but didn't think the extra 300$ was worth 1lb of boost and I know the 140 has more volume but now I'm second guessing myself like I do on everything. I'll be turning the motor to 8700-8750. Thanks for ur advice
07-19-2013, 08:52 PM #2
15 psi at 8650, but with quite a few other bolt ons
07-19-2013, 10:15 PM #3
Will it keep making boost after 8650, another guy posted 15psi at 9k.... I wouldn't think it would stop but could be at its limit
07-19-2013, 10:18 PM #4
12.2 @ 8300 so far. At the map sensor.
Last edited by hotbird; 07-20-2013 at 08:40 AM.
07-19-2013, 10:48 PM #5
07-19-2013, 11:17 PM #6
07-21-2013, 02:13 PM #7
Will this scer stop making boost in the high 8s?
08-14-2013, 05:23 PM #8
- Join Date
- Aug 2011
08-14-2013, 05:34 PM #9
- Join Date
- May 2011
- West Texas
A non-restrictive, efficient ic core will help with boost numbers. You will gain a little, especially at high rpm, with a good (expensive ) core.
08-14-2013, 05:42 PM #10
15 psi at 9000 rpms now.
77 gps mph on a rxt
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Mark S in forum 4-Tec PerformanceReplies: 3Last Post: 04-12-2007, 08:28 PM
By BOOSTED in forum 4-Tec PerformanceReplies: 27Last Post: 03-22-2007, 04:33 AM
By Flying Scotsman in forum Yamaha PWC Performance (2-stroke)Replies: 4Last Post: 03-21-2007, 09:39 AM
By Chrisrokc in forum Yamaha PWC Performance (2-stroke)Replies: 27Last Post: 02-16-2007, 08:31 PM
By seadoo02xp in forum 4-Tec PerformanceReplies: 18Last Post: 08-23-2005, 09:35 AM