No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 Yes, can log with Haltech, it will also flash the engine light. Also have a wideband so if it was lean it will know/flag/put it into engine protection and throw codes etc. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819031 Share on other sites More sharing options...
turb33gtst Posted March 21, 2017 Share Posted March 21, 2017 Cool My Knock sensor count climbs in hot weather at low rpms and boost is reduced but when its cool like today count is 0 and boost kicks like a mule and car breaks traction in 1st , 2nd & 3rd. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819033 Share on other sites More sharing options...
djvoodoo Posted March 21, 2017 Share Posted March 21, 2017 Interesting topic re: Map sensor. I'm running -9's (GT-SS), on a Vipec. My tuner (DVS Jez) also tuned 'around' the 3 Map sensor. I hit 24psi boost as well from 4-5000rpm before it backs down to 21psi up until 8K redline. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819044 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 I don't think it's anything new to tune beyond sensors, on the dyno, but I can understand why it's less than ideal. It was a last minute decision while we were there, but I should have pulled my finger out and bought the proper sensor afterwards. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819045 Share on other sites More sharing options...
r32-25t Posted March 21, 2017 Share Posted March 21, 2017 14 minutes ago, djvoodoo said: Interesting topic re: Map sensor. I'm running -9's (GT-SS), on a Vipec. My tuner (DVS Jez) also tuned 'around' the 3 Map sensor. I hit 24psi boost as well from 4-5000rpm before it backs down to 21psi up until 8K redline. A 3 bar map sensor will read up to 29psi 1 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819047 Share on other sites More sharing options...
djvoodoo Posted March 21, 2017 Share Posted March 21, 2017 12 minutes ago, r32-25t said: A 3 bar map sensor will read up to 29psi Fair enough. Mabee i was told incorrect info. Someone mentioned to me that 3 bar absolute is not the actual same as total "boost". And just looking up my Vipec, it's 2.5 bar map sensor or 22ps "boost"i? Could be completely wrong though. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819052 Share on other sites More sharing options...
Piggaz Posted March 21, 2017 Share Posted March 21, 2017 3 bar absolute is 2 bar of boost 2.5 bar absolute is 1.5 bar of boost. You take away 1 bar for the "1 bar" of atmospheric pressure. 1 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819053 Share on other sites More sharing options...
djvoodoo Posted March 21, 2017 Share Posted March 21, 2017 (edited) Yep, Vipec V44 plugin is 2.5 bar onboard, my bad. So technically, it's been tuned 'around' the extra 2 psi in midrange for me. Edited March 21, 2017 by djvoodoo Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819054 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 Yep, pretty much same as Haltech. Can "see" 21psi above atmospheric. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819061 Share on other sites More sharing options...
Dose Pipe Sutututu Posted March 21, 2017 Share Posted March 21, 2017 then your car hits 2 bar, ecu has no idea boom. 2 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819069 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 Wouldn't the wideband see it leaning out - and react accordingly? Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819076 Share on other sites More sharing options...
Hadouken Posted March 21, 2017 Share Posted March 21, 2017 You need more gauges Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819086 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 I've ordered the Haltech barometer. 1 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819092 Share on other sites More sharing options...
Dose Pipe Sutututu Posted March 21, 2017 Share Posted March 21, 2017 2 hours ago, ActionDan said: Wouldn't the wideband see it leaning out - and react accordingly? but how would your wideband determine you've over boosting? or that you're running way to much timing? And how would your wideband and or your map sensor determine you've over boosted and cut fuel/igniting to your motor? Pointless having engine protection that's not protecting a basic thing like exceeding load, in this case boost. 2 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819113 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 I got you, will put an order in tomorrrow. Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819115 Share on other sites More sharing options...
GTSBoy Posted March 21, 2017 Share Posted March 21, 2017 10 hours ago, ActionDan said: I've seen videos, but I've never personally fisted a pussy.. fisted pussy <> punched cat Although....the resulting damage is probably similar 1 Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819148 Share on other sites More sharing options...
Lithium Posted March 21, 2017 Share Posted March 21, 2017 10 hours ago, ActionDan said: I got you, will put an order in tomorrrow. Let us know how you get on. While there is a good chance that it is to do with that, there is no guarantee BUT a MAP sensor that suits what you are doing is really a must have imho so not wasted money no matter what way you cut it. Obviously it'll need remapping to get rid of the guess work on the 250kpa load range - good luck! Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819179 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 It'll need a retune either way for the Cams. As an aside, how do you bench test BOVs? Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819185 Share on other sites More sharing options...
Hadouken Posted March 21, 2017 Share Posted March 21, 2017 Didn't you check for boost leaks already? Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819188 Share on other sites More sharing options...
No Crust Racing Posted March 21, 2017 Author Share Posted March 21, 2017 (edited) On 3/20/2017 at 6:55 PM, ActionDan said: Any easy way to test them? Boost leak test doesn't help as any leakage stays in the intake so total pressure remains the same. My BOV's are plumbed back. Leakage past the BOV just ends up back on the hot side of the motor. Total pressure remains the same and given the noises involved in pressuring the system, hard to hear if the BOV is unseating. Edited March 21, 2017 by ActionDan Link to comment https://www.sau.com.au/forums/topic/469686-intermittent-performance/page/3/#findComment-7819190 Share on other sites More sharing options...
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