Evo 8 BOV
Evo 8 BOV
The car has had a decat pipe fitted which does cause the managment light to come on as a result, a pain , but still searching for an answer on that.
However, it also has a Turbo Smart BOV which seems to be causing hassle and on occasions making the engine now stall.
So, i have now been told, that that BOV is only really for cars running 500bhp and this is only 390bhp....
So what BOV would you reccomend if the Turbo Smart is actually the problem in the first place..
Ok, have an Evo 7 with full Evo 8 engine conversion...
The car has had a decat pipe fitted which does cause the managment light to come on as a result, a pain , but still searching for an answer on that.
However, it also has a Turbo Smart BOV which seems to be causing hassle and on occasions making the engine now stall.
So, i have now been told, that that BOV is only really for cars running 500bhp and this is only 390bhp....
So what BOV would you reccomend if the Turbo Smart is actually the problem in the first place..
I think it'd bring the engine management light on due to fuelling problems, o2/lambda sensors?
BOV's, I reckon a GReddy bov, they seem to be fairly good
Dark Samurai
27-02-2019, 11:26 AM #2I don't think that, the BOV being rated for 500bhp, would make a difference if it was running 200bhp or 700bhp really...
I think it'd bring the engine management light on due to fuelling problems, o2/lambda sensors?
BOV's, I reckon a GReddy bov, they seem to be fairly good
Which turbos art does it have on?
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Sparkystav
27-02-2019, 11:48 AM #3The hks ssqv's are excellent.
Which turbos art does it have on?
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Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
27-02-2019, 01:33 PM #5Sorry predictive! Which turbosmart valve does it have? You got a pic?
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Dumpvalves have springs basically which release at certain pressures past the springs
HKS ones seem to be responsive to both low boost but dont leak under high boost.
Now we run a rediculously strong spring on my brothers Forge motorsport dv on his GTFour and it barely ever dumps unless we go past 1.4bar boost.
The dv dumps on boost, and shouldnt in theory cause issues, i used to hear that on 185's an atomospheric dv cause issues with the maf sensor causing the engine havoc due to the air being released rather from the system but that shouldnt happen on a Evo, least of all one that in theory should of been mapped so no in short, the dv is not your problem.
Unless there is an air leak?
saying that a dumpvalve is for a certain amount of bhp is utter tat mate, whoever told you that is talking out their bottom.
Dumpvalves have springs basically which release at certain pressures past the springs
HKS ones seem to be responsive to both low boost but dont leak under high boost.
Now we run a rediculously strong spring on my brothers Forge motorsport dv on his GTFour and it barely ever dumps unless we go past 1.4bar boost.
The dv dumps on boost, and shouldnt in theory cause issues, i used to hear that on 185's an atomospheric dv cause issues with the maf sensor causing the engine havoc due to the air being released rather from the system but that shouldnt happen on a Evo, least of all one that in theory should of been mapped so no in short, the dv is not your problem.
Unless there is an air leak?
1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Be careful with the hks ssqv as there is a lot of fakes out there andI would the thought of someone being ripped off after spending good money with one of these £50 Chinese specials
1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
If so Dales right with ti messing with the MAF as the car is on standard ECU i assume?
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
27-02-2019, 11:34 PM #8I assume the DV is the red split one? if so it could be that it does dump partly to atosphere and partly recircs?
If so Dales right with ti messing with the MAF as the car is on standard ECU i assume?
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
That said, I would expect a forced induction engine the age of an Evo 8 to be MAP.
30 seconds googling tells me that Evo 8 engines are MAF, so your dump valve is creating a boost leak when it dumps. Bin it and put the stock recirculating valve back on.
My question would be whether the EVO is MAF or MAP. If it's MAF, it would explain stalling/missing on the valve dumping, AND the engine warning light, due to losing metered air. (Basically what dale said)
That said, I would expect a forced induction engine the age of an Evo 8 to be MAP.
30 seconds googling tells me that Evo 8 engines are MAF, so your dump valve is creating a boost leak when it dumps. Bin it and put the stock recirculating valve back on.
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