# RB20 out from hibernation with hesitation..help

**URL:** <https://forums.speedlife.net/t/rb20-out-from-hibernation-with-hesitation-help/221280>\
**Category:** SON240sx Automotive\
**Created:** [March 17, 2012, 12:19pm UTC](https://forums.speedlife.net/t/rb20-out-from-hibernation-with-hesitation-help/221280 "2012-03-17T12:19:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DirrtyDevo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dirrtydevo/32/5547_2.png) [@DirrtyDevo](https://forums.speedlife.net/u/DirrtyDevo)\
**Post date:** [March 17, 2012, 12:19pm UTC](https://forums.speedlife.net/t/rb20-out-from-hibernation-with-hesitation-help/221280/1 "2012-03-17T12:19:18Z")

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My RB20’s running well, idles high for a while until fully warmed up like 15 minutes which its always been.

Now when I give it full throttle it pulls awesome but hits a huge limiter/wall at just over 7000RPM which i never had before?? Engines power cuts completely very suddenly, i always let off as thats my first instinct is a blown IC pipe but getting back on the gas the cars fine. Im convinced its not a leak after doing multiple boost leak tests up to 30psi. This happens every time any gear it seems, im fine just driving around but want full potential. For some reason i think its electrical, What else should i be looking into?

TPS, MAFS…bad gas setting off knock sensor…

Fuel pressure is perfect within spec fyi, engine will do this with E cutout open or closed so its not a clogged cat.

---------- Post added at 02:19 PM ---------- Previous post was at 01:49 PM ----------

Problem fixed, stock rubber intake pipe was collapsing. weird.

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**Author:** ![Turbo\_Crazy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_crazy/32/5730_2.png) [@Turbo\_Crazy](https://forums.speedlife.net/u/Turbo_Crazy)\
**Post date:** [March 17, 2012, 4:21pm UTC](https://forums.speedlife.net/t/rb20-out-from-hibernation-with-hesitation-help/221280/2 "2012-03-17T16:21:22Z")

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might be simple like new plugs?  
I know I change my plugs every spring in the RB

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<div class="post-metadata">

**Author:** ![DirrtyDevo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dirrtydevo/32/5547_2.png) [@DirrtyDevo](https://forums.speedlife.net/u/DirrtyDevo)\
**Post date:** [March 18, 2012, 3:03am UTC](https://forums.speedlife.net/t/rb20-out-from-hibernation-with-hesitation-help/221280/3 "2012-03-18T03:03:12Z")

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It turned out to be the rubber intake collapsing under heavy throttle 😑 Time for a custom intake i think!