mt2man
Posted a lot
Posts: 1,366
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May 25, 2014 19:51:03 GMT
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Hey looking at getting one if these for the 300zx www.ebay.co.uk/itm/151055280128 Anyone have any experience with them? Or boost controllers in general? Looking at winding my turbos up and a turbo timer might be handy too so looking at which kinda route to go down, it's either going to be a electronic or just a cheap mechanical one. The cars running 2 t28's and want to aim for roughly 400bhp  Any info would be great, I do have a decent greddy boost gauge so will be able to see what boost I'm running easily Jack |
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bobman
Part of things
Posts: 109 
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May 25, 2014 20:24:21 GMT
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the bleed type mechanical ones work ok, but the electronic is much better in every way, we have a APEXI AVCR in the bros ep82 an it holds 1bar on the gauge, Bleed type have a tendency to seep, witch can cause spikes, the electronic uses a sensor to actively adjust as it runs, you can set it to ease if off as it gets to the limiter, instead of boosting full all the way, or even increase more low down,
Mechanical is cheep but will do Electric is a proper gizmo to play about with and will do it proper My 2cents anyway |
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May 25, 2014 21:48:34 GMT
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Seconded a gizzmo or a jizzmo as my pal calls it lol
Great piece of kit
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mt2man
Posted a lot
Posts: 1,366
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Cheers for the replies! This is my first high powered turbo car so abit new to increasing boost etc, should be fun |
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mt2man
Posted a lot
Posts: 1,366
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May 26, 2014 10:00:11 GMT
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Gizzmo are on eBay for around £200 how much better would this be Over a boost gauge and a cheap £20 mechanical boost controller?
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bobman
Part of things
Posts: 109
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May 26, 2014 18:42:38 GMT
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the bleed valve will do the job, Increase it in increments- 1 click at a time then roadtest it, adjust until your happy, or until it reaches boost limit and then turn it down a click or two, A bit of google and you should find out what sort of boost your engine can cope with without needing mapping, injectors, ect a better fuel pump is usually a good idea too,
with the electronic you can set it too say 1bar and it will adjust and hold, so you only ever get 1bar at any point in the rev range, you can also set it to give 1.2bar from 4000rpm-5500rpm or decrease at a certain point so it gives a strong smooth pull trough the rev range instead of spiking at a certain point
the bleed valve wouldn't be as precise, but dose the trick.
For example; we-{garage I used to wrk in} put one on a rb25-det r33 wound it up to 12psi and it was a blast, amazing difference, but early in the morning(cold/dense air we think) it would hit the ecu's boost limit and try launch you trough the windscreen so we wound it back to 10psi, would still light the rears as it came on boost in 3rd so was all good |
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Last Edit: May 26, 2014 18:44:20 GMT by bobman: cant spell
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mt2man
Posted a lot
Posts: 1,366
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May 26, 2014 22:25:24 GMT
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That's great cheers might go for a mechanical one to begin with! Need to do some research into how to redo the plumbing on a twin turbo 300zx set up so I only need 1 boost controller, and see how much boost they can safely run, I beleive my car now had t28s so should take some good boost, the rest of the car is standard though so don't want to go too mental just yet! |
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You can have different preset buttons with different boost levels , also more precise as no matter what is happening will only bleed off what's needed , just don't hike the boost up too much as tempting as it as ... Along with a increase in boost it will need a check over and setup each time See my detting thread for an idea of what happens when you increase the boost too much hahaha  interesting read also pal www.sxoc.com/vbb/showthread.php?524768-Gizzmo-boost-controller |
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luckyseven
Posted a lot
Owning sneering dismissive pedantry since 1970
Posts: 3,839
Club RR Member Number: 45
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May 27, 2014 11:50:18 GMT
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I can't comment on the Gizzmo specifically because I've no personal experience of them, but generally what you're paying for with the more expensive electronic controllers is the quality of the actuator and how fast it reacts. I was happy to pay a premium for my boost controller (a snappily-named GReddy Profec B-Spec II) because £200 is cheaper than the £2k for an engine and boost spikes will kill a rotary faster than almost anything else... and they won't do your pistons much good either. It's easy power, upping the boost... but with power comes responsibility and you'll find with a quick search the internet is full of tragic tales of "it was going so well I thought I'd just turn the boost up a fraction more...". Then you get overboost, fuel cut, lean out, detonation and the bloke in the car behind you is picking shrapnel of your piston CROWN out of their hair. Especially on a turbo car, nothing happens in isolation. Turning the boost up without any improvement in fueling, mapping, ignition, etc, can be like taking the pin out of a grenade. Worth investing a few quid on a decent controller, I reckon
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