Ijimman Posted November 1, 2015 Share Posted November 1, 2015 Howdy chaps I have a 10 hatch WRX-S WITH 55k on clock She has just had a HKS BOV and a cobra sport de cat exhaust fitted. She now revs occasionally between gear changes and idle is a little erratic. She also at one point suddenly cut my power steering and power mid steer when I pushed her a bit harder Any help appreciated chaps cheers Quote Link to comment Share on other sites More sharing options...
stants Posted November 1, 2015 Share Posted November 1, 2015 Have you had it mapped for the changes ? May be that the various sensors are being confused by the metered air & pressure not being there, 1 Quote Link to comment Share on other sites More sharing options...
Sandals Posted November 1, 2015 Share Posted November 1, 2015 Maybe your IACV (Idle Air Control Valve) needs a clean... i know mine does as sometimes my revs jump between gear changes, my replacement gasket for it as arrived just haven't got around to doing it yet!! http://forums.nasioc.com/forums/showthread.php?t=781242 Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 1, 2015 Author Share Posted November 1, 2015 Not had it mapped yet. The parts have shifted the power band up the Rev range more than I would like so definitely needs a map. Anybody recommend a good place? I'll give the clean of the sensor a go as well Cheers Quote Link to comment Share on other sites More sharing options...
stants Posted November 1, 2015 Share Posted November 1, 2015 Dunc at @ race dynamix is fairly close to you a load of us have used him here, drop him a mail and see what he comes back with Quote Link to comment Share on other sites More sharing options...
Scoobyghost Posted November 2, 2015 Share Posted November 2, 2015 The cut mid corner could be fuel surge. If I have 1/4 tank or less and try to power out of a long corner it'll bog down. I'm on a classic so not sure if they redesigned the tank and pump by the time it gets to your model. The decat could allow over boost which may cause boost cut as the sensors won't like that. Agree with what's been said it needs a map now to bring all the mods together and get it all under control. Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 2, 2015 Author Share Posted November 2, 2015 Dropped him an email so hopefully he comes back to me ASAP. Cheers for the help guys will update once sorted Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 4, 2015 Author Share Posted November 4, 2015 She is going on for a remap on Friday morning with Duncan. Noticed my power steering fluid is low so wondering if the cut out during cornering may have been from sucking air due to fluid sloshed to one side. The revs as well may be from the BOV being too tightly spung. That being said the HKS I have is not adjustable. Will update again once the map is done gents with results Quote Link to comment Share on other sites More sharing options...
Sandals Posted November 4, 2015 Share Posted November 4, 2015 I doubt it's your BOV... My revs have been jumping between gears with both the standard recirc valve and my GFB blow off valve (regardless of spring adjustment) 1 Quote Link to comment Share on other sites More sharing options...
Sandals Posted November 4, 2015 Share Posted November 4, 2015 Another member has said this in another thread: "Also have a look at the butterfly which the throttle cable goes to, mine was sticking and causing it to rev between gears and sometimes on idle. Simple WD spray and a clean up. Mystery_Machine your car looks outstanding." http://uk.subaruownersclub.com/forums/topic/15979-revs-increase-when-changing-gear/ Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 4, 2015 Share Posted November 4, 2015 As sandals sed mine does it with standard recirc and did it with my bov before and after map my brothers 3 mps does same Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 4, 2015 Share Posted November 4, 2015 As sandals sed mine does it with standard recirc and did it with my bov before and after map my brothers 3 mps does same Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 5, 2015 Author Share Posted November 5, 2015 On a side note I'm gonna try a clean of the IACV. Does anyone know the gasket part no for a 2010 hatch WRX-S? Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 6, 2015 Author Share Posted November 6, 2015 Update. The car has had a map. Minor bhp increase of around 15. Big Torque increase of around 70 pound feet. Still rev issue though between gear changes. Will check the throttle catch cable next Quote Link to comment Share on other sites More sharing options...
Sandals Posted November 6, 2015 Share Posted November 6, 2015 That's a nice torque increase!! I still haven't had a chance to clean my IACV... weather has been too miserable the past week! Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 6, 2015 Share Posted November 6, 2015 Like mine that managed 230 bhp at wheels but got 311 lb ft after map Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 6, 2015 Author Share Posted November 6, 2015 Mines pushing 270bhp and 340 torque now but I wanna get her in the 300 club really. Down pipe etc will be next on the list methinks Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 6, 2015 Share Posted November 6, 2015 Mines had down pipe full exhaust n panel filter before map is urs 270 at wheels or crank? Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 7, 2015 Author Share Posted November 7, 2015 270 at wheels with partial decat, filter, BOV. To update tho she may have over boosted yesterday. Trying to identify today if that's the case Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 7, 2015 Share Posted November 7, 2015 Is ur sti then just going on fact u sed u only got 15bhp outta map n bov caused many issues on mine had to take it off Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Ijimman Posted November 7, 2015 Author Share Posted November 7, 2015 WRX-S 2010. I really don't want to take the BOV off but may need to eventually Quote Link to comment Share on other sites More sharing options...
Ryan85 Posted November 7, 2015 Share Posted November 7, 2015 Oh r8 makes sense nar power wise need mine redoing think there's more to be had not impressed with map but Xmas coming so be new yr nar n going for forge recirc on mine Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
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