procom power jet

Adrian Heys

Registered User
#1
I have bought a procom power jet to fit my Honda vfr800fi. It has 2 connectors which plugs into the bike somewhere on the air box. Its plug and play . It alters the air intakes as temp changes, so it has 10 settings to make the bike run more effective. I at the moment don't know where this plug is or how difficult it is to gain access too it. Has anyone any advice as I want to install soon . I started reading the manual as to find what or where the plug is. See photos of units Any advice would help
 

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marks152

Registered User
#2
You need to lift tank. Remove the top of the air box. Then remove the 4 trumpets and lift the airbox off the throttle bodies and you will see it connected to the airbox base
 

Adrian Heys

Registered User
#3
Hi Marks152. Ok that sounds quite easy job. Can I damage the throttle bodies or anything ? under the airbox. Never worked on a vfr before bit nervous with the fuel injection. I have changed air filter once . Thanks for you help
 

PAD

Registered User
Site Sponsor
#4
Screws on the trumpets can be a bit of a pain and are fairly delicate (maybe because they get brittle with age?). Use a JIS screwdriver if you have such things, if not then use a Phillips but grind a bit off the tip so that it seats in the head of the screws well (JIS are much the same as Phillips, but have a more obtuse angle on the tip. Thus, when a Phillips screwdriver is used in JIS screws, the increased length of the tip bottoms out in the screw head before filling the slots - the cause of many a wrecked screw head on Japanese bikes and utterances of 'bloody Japanese crap' and the like). When rebuilding, watch out for trapped and kinked wires and pipes - particularly pipes under the tank.
 

lee j

Registered User
#5
Take photos as you go to help you see where pipes fit back again. There are several pipes connected around/under the air box. Throttle bodies clamps will need a long Phillips driver to reach them through the frame.
Lee
 

Bumpkin

Formerly VFRChas
Site Sponsor
#7
No, once you have the tank up and the top of the airbox off, air filter removed you'll see the screws recessed into the edge of the trumpets. Once these are unscrewed the lower airbox will lift off and give you the access you need. There will be several hoses and connectors that you will need to carefully remove, it's these where taking photos for reassembly is useful. The throttle bodies stay firmly in place and won't be disturbed by what you're proposing to do.
 

Adrian Heys

Registered User
#8
thank you i will give it a go as soon as i can. i have started reading the manual on the air box removal.
has anyone fitter a procom power jet as few instructions came with the product, ive read up a bit which says you can alter how the bike runs dependant on outside temperature. the unit increases air / petrol mix increasing overall performance increased performance using the various settings, hope so

thanks again
 

marks152

Registered User
#9
Looking at the unit. It's little more than a variable resistor/potentiometer in a box which you could have made for less than £5. All the "settings" do is change the resistance which fools the ecu into thinking the intake air is hotter(less dense) or colder(more sense). The ecu then alters pulse width on the injectors to add/subtract fuel.
 
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#10
HI MARKS152
THE VFR800 FI runs hot when the suns out in traffic so would this powerjet set up help with this if set up right.. I didnt buy this to increase performance yet on their website it does say it will. I thought it would help the bike to run better when set up for weather changes or altitude differences as outlined. I know that people have done the various mods on the vfr800 to increase air intake which they state helps the bike run more efficiently. Is the VFR800FI detuned for the British market? A you tube vid says the powerjet also helps if slip on pipes are used or new exhaust systems fitted. I dont know if this is true. I dont really understand electonics ecu mapping etc so thanx for your help much appreciated.
 

Adrian Heys

Registered User
#11
ok folks i managed to take off the air box to find the air intake connector. removing the trumpets was a pain as screws were very tight, i also had to remove back 2 coils and i have to say one hose at the front of the airbox next to the left fork was a right pain to get to and release. Disconecting this hose was easier than assembly it. si i connected the procom power jet gadget and then re assembled the bits with no screws left . tried it out today on procom standard setting set unit as per instructions and started the bike on choke as normal she started fine tick over fine as normal. on riding vfr she seemed ok as normal on standard setting. so their are about 8 settings in total to use. number 1 a bit more throttle response and a bit perkier acceleration, no 2 again tick over a little higher but with more power about 6 k revs , temp seemed as normal, no 3 setting more noticable smooth pickup from standing with more power again on mid rev range 6 - 9 k. i was impressed with this setting as it made the bike more lively responsive better acceleration without red lining her at all.
the bike used to occasionally burble a backfire when stock usually on deceleration on a hill, i didnt notice this with the procom. if setting 3 is this good what will the others do? i dont want a racebike just something a tad livelier. the procom seems to have done that so far. The big question is can it damage the engine?
comments please ADE
 
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