Geoff.RC Posted April 13, 2003 Share Posted April 13, 2003 Hi guys, I am new to this forum and I am no wizard with computers so I may appear a bit slow. I am the proud owner of a White 98' vvti Supra,now with 40'000 on her,18000 when we were introduced.I bought a HKS induction kit which I fitted but I discovered that she fluffed at high revs and sooted up the tail pipe and I was loosing power. The induction kit was quickly removed in case I did any damage. Would it have damaged my engine or was it my fault for not dealing with both ends- exhaust system?I do not feel that at this point I want to get involved in a new exhaust system so if this is the case would anyone like to buy it at half price? Regards Geoff. Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted April 13, 2003 Share Posted April 13, 2003 HI Geoff and welcome to the board. A good lot on here generally and you'll go down well offering parts at half price It has been noted by a few list members that on hot days aftermarket induction kits do not work as well as expected. In fact the stock system can outperform, due to only drawing air from outside the engine bay. I think this may be what you have experienced. You shouldn't have done any harm. IMO you would be better off starting with the exhaust rather than the intake. Have a browse of the BBS there is lots of good information on here particularly pertaining to mods. Also take a look at http://www.mkiv.com. Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 13, 2003 Author Share Posted April 13, 2003 Hi Martin, many thanks for your reply. I think that in both cases you are right. The exhaust does seem to be the logical place to start. I have also noticed that as with my previous car a Toyota Aristo 3v (2JZGTE motor) the Supra will pink under load on a hot day. Running on Optimax stops this, so I know of all the local garages that sell Optimax. I read the thread about keeping octane booster in the car in case I am unable to find Optimax, as was the case when I recently drove my wife to Cardiff. Do they not sell it down there? Kind regards, Geoff. Quote Link to comment Share on other sites More sharing options...
Thorin Posted April 13, 2003 Share Posted April 13, 2003 The pinking sounds like you could do with a plug change. Fit a colder grade of spark plugs and see if that clears it up. Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 13, 2003 Author Share Posted April 13, 2003 Hi Michael, I am still running the plugs she came with from Japan what plugs would you reckomend or is it time to hit the seach button? done to The combination of Optimax and colder running plugs would appear to be the easy answer to what has been a worry for me. I have heard horror stories about the damage that has been caused to a couple of local imported Scoobies through poor fuel. I followed your link to your site, I had the poor mans Skyline 280bhp rear wheel drive only, no traction control. What fun that was, to much fun really it was like driving a time bomb! You could make fantastic statements like vanishing in a cloud of blue smoke,pop 180 degree turns or do doughnuts. A rally driver friend of mine said that it was more fun than the four wheel drive version for a lot less money. Regards, Geoff. Quote Link to comment Share on other sites More sharing options...
qaisar Posted April 13, 2003 Share Posted April 13, 2003 have a look at alex's thread in the for sale section, he's selling denso plugs in a group buy and most people would recommend these, if you are still interested in selling the induction kit pm with a price as i may be interested, although at the moment i am actually looking at the blitz one. you should be aware that the vvti induction system is different from the non vvti's Quote Link to comment Share on other sites More sharing options...
Darren Posted April 13, 2003 Share Posted April 13, 2003 Geoff, I am running an HKS induction kit on my VVTI. No problem encountered with misfires after it was fitted. Darren Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 13, 2003 Author Share Posted April 13, 2003 Hi Qaisar, I am aware the the vvti induction kit is different simply because DPS motorsport in Warrington sent me the wrong one first. Thanks for the info on the plugs I will most certainly join in on a group buy. Regards, Geoff. Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted April 13, 2003 Share Posted April 13, 2003 Geoff - you do not need colder plugs if your car is stock. Stick with the standard heat range plugs. Denso IK20's will be fine. Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 13, 2003 Author Share Posted April 13, 2003 Hi Darren, thanks for the info also. I will try again with the induction kit and new plugs. I was a bit paranoid about damaging the motor because up till now advice was thin on the ground,most people seemed to know only about Scoobies. Gentlemen don't drive four pot motors! Geoff. Quote Link to comment Share on other sites More sharing options...
Darren Posted April 13, 2003 Share Posted April 13, 2003 Geoff, So it does not miss with the standard airbox? That is strange to say the least.? Darren Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 13, 2003 Author Share Posted April 13, 2003 Hi Darren, it does not miss a beat with the normal air box on, I first noticed a couple of days after I fitted it that she was not pulling high revs as easily. I was chasing a Mitsi' Evolution V, and the power just did'nt come in as it normaly does. It did not miss fire or pop but it was not as smooth or responsive and was hesitating which I rightly or wrongly thought was 'fluffing'. Regards, Geoff. Quote Link to comment Share on other sites More sharing options...
Darren Posted April 15, 2003 Share Posted April 15, 2003 Geoff, I fitted an HKS Super Drager at the same time as my induction and was exceptionally happy with the results. But from what I read its the exhaust that makes all the differece. Good luck, Darren Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted April 15, 2003 Share Posted April 15, 2003 Hi Geoff, is the car standard apart from the induction kit? If not, do you have a proper boost gauge fitted? It's very debatable if the induction kit makes any difference other than noise - there was a big debate about it recently, have a search around. Quote Link to comment Share on other sites More sharing options...
Nathan Posted April 16, 2003 Share Posted April 16, 2003 I must admit I've never come accross any problems with VVT-is and HKS induction kits, as seems to be confirmed by others on this list. The only help I can give is be careful with the MAF sensor. They are not known to be tempramental like Scoobies but that is honestly the only thing I can think of, or maybe a wire going to it. Failing that, the other option is to get it on a rolling road, try and get it to fluff and diagnose exactly why it's doing it. Best regards, Nathan TDI PLC Quote Link to comment Share on other sites More sharing options...
outatime Posted April 16, 2003 Share Posted April 16, 2003 Welcome... Do a search on induction kits, many reckon they do sod all but sound good, especially on warm days. Any engine damage from poor filtration would be over a long period of time so I wouldnt stress too much. Whereabouts in North Wales are you from? Quote Link to comment Share on other sites More sharing options...
Geoff.RC Posted April 20, 2003 Author Share Posted April 20, 2003 Hi Guys, thanks for your posts, my car is completely standard. I have removed the HKS filter and returned to the factory airbox again. I now have no problems with it. Is the maf sensor the device that fits in the the induction pipe between the manifold and the airbox? If so, then I was most careful to make sure that the wiring was was in good order and that the sensor itself was fitted correctly. What I have noticed however is how much my Supra loves cold wet conditions as did my previous car, the Aristo, also with the 2jzgte motor. Does it not follow that I have less chance of getting a cool dense charge with the HKS filter than the original airbox,especially as the HKS filter breaths in the engine bay. I left the radiator mounted air scoop in place when the HKS was fitted as per instuctions. Aint this cool! Kind regards, Geoff. Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted April 20, 2003 Share Posted April 20, 2003 All your assumptions above are correct. That was the MAF sensor in the inlet piping and yes it is harder to get a nice cool charge of air with the HKS filter than with the standard box and filter. Quote Link to comment Share on other sites More sharing options...
Nathan Posted April 25, 2003 Share Posted April 25, 2003 Originally posted by Martin F That was the MAF sensor in the inlet piping and yes it is harder to get a nice cool charge of air with the HKS filter than with the standard box and filter. Unless you have one of our carbon fibre airboxes..;-) Seriously, I have no idea why you are having problems with the HKS kit. I can only assume that it is an indirect cause. I've not yet had any problems with fitting them, and I would think we've done around 25 or 30. One of the more well known Supra guys (Mike Lavery) has had his on for a couple of years now. No problem whatsoever. Regards, Nathan TDI PLC Quote Link to comment Share on other sites More sharing options...
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