Mike B

you know.. you are absolutely right I'll mail you for a quote. The car is a real hodge-podge of different tech, and this system I have now is a fudge from the first install IMHO. I think it will be an expensive install though, a lot of work....

That motec link is very interesting, thanks for sharing.. it goes a long way to describing the noise and programming of the data it interprets... Learned a lot., The Vpro in my car has a knock link, yet I believe (need to check) that it is locked into the stock sensors. It's possible that the v pro can advance and retard the map, (I can also do this manually through a rotary dial in the glove box!). Yet the problem I have is with the stock ecu.. The stock ecu controls the throttle and VVTi, it is fed data by the stock knock sensors.. hence the shutdown.. all fuelling and ignition is controlled by the Vpro.. But throttle is all done with stock ecu. So it's the stock knock sensors feeding data to the stock ecu that is causing the shutdown. I pulled the sensors off the block but the ecu immediately shows the engine warning light, then I realised they need to be earthed, so I rigged something to the body.. But the light is still on.. You think the ecu can tell the sensors are not actially on the block?? I will earth them to the block directly on the next tinkering session.. I will also pull the fault codes to check exactly why the engine check light is coming on.. It's not been run for a few months.. Perhaps a mouse chewed through a different wire.. I know a tuner who could log the Vpro.. I do not have the softwear I use a phormula knock sensor as a stand alone system with a 3rd and stand alone knock sensor on the block, this is where I see the peak hold value between gears. I will research and see if I can log this.. Again, any ideas on how to turn off the stock ecu sensors or mask them would be appreciated!!

Thanks chap.. I would be interested... I believe your icv is wired up to your aftermarket ecu?

It's possible, but the correlation of the throttle fault with the 3rd party knock monitor spike, means that there is a det frequency noise somewhere, and the stock sensors are picking up something that the other knock system is picking up too.. a change in the stock sensors *may* make them less sensitive and help, but if I change them they will still pick up the same noise... and the problem will still remain... I either need to - get rid of the noise.. - put some ear mufflers on the sensors whilst not upsetting the ECU - fit a mechanical throttle body - fit an ecu that will run the fbw and the mapper can program around..

Oh dear.. I can see where this is going.. I have a mail on ryan's computer waiting to be answered about this subject already.. surely there must be something sneaky I can do to get round the stock knock sensors...? they just need a nice quiet spot to keep them out of trouble.

Oh come on chaps, there has to be a cheaper easier solution than that! ****and whispers... (how much is a syvecs anyway?)..

agreed, but I don't fancy paying 1000's for a new setup.. mine works perfectly aside this throttle issue.. :-(

Yeah, Ryan mapped the car, no issue on the dyno at all, but on the road FBW and I regularly have a difference of opinion.. hmmm.. well seeing as you asked! More to the point; whats wrong with MY fbw... well actually it works perfectly - but I have a problem elsewhere. There is some noise in the engine that the ecu picks up as det... There is ZERO det on the dyno, and it runs perfectly on a dyno run, but put it on the open road and there is something going on... When you go from gear to gear the first 2 1/2 seconds on the next gear is on 50% throttle. Sometimes it will go through the whole gear at half throttle. I have lived with it for 4-5 years and I have had enough.. it's getting sorted! Ryan mapped the car... he listened to the engine and he can hear no det under load, infact no det at all (he's only listening on the dyno mind you) I have a 3rd party knock sensor wired in, and we can see no det under load. There is no det during a hard pull on the road.. just like on the dyno, it's mapped perfectly. but drive it through a few gears, get full throttle 2nd, take third and there is a throttle shutdown. Take 3rd and go to 4th.. throttle hesitation again. I thought it may be an extra sensor safety shutdown as I run a T67 single, but every time this happens I look at the peak hold on the knock monitor and sure enough, there it is; a spike. We are sure the spike is not load related, but it's there and i have no idea where it comes from.. and I cannot seem to get rid of it. Occasionally after a long run on the motorway the car will run perfectly, but the next day there is the spike again.. Car has had a new flywheel and clutch while I have had it and no difference. The problem has always been there.. I thought the answer would be to disable to knock sensors. So to start with I wired a variable resistor into the sensor feed; no difference, until the resistance was so high that the ecu light comes on. Then I screwed the knock sensors off the block, but the ecu light comes on and I'm in safe mode. I then realised that they were earthed through the block, so I wired them to the chassis, but the ecu light is still on 10 seconds after startup, and engine is in limp mode. I will try a stronger earth, but I think the ECU is reading zero noise and as such it's deciding that there is a faulty sensor. either way, the FBW throttle and I are arguing, and it's an argument I intend to win... my only other thought is that I could somehow mount the sensors somewhere less noisy, but I have a feeling that this will also end in frustration... ALL ideas welcome! come spring, I want a ghost free throttle...

Wow, must be a tricky thing to map, sounds like he may have it sussed.. really that much difference? what happens in 5/6th on a low rev pull? you have a dyno session planned?

Thanks Chris.. no ecu issues you can remember? hmm.. wonder how I will get round the icv.. don't really want to call the mapper out again. FBW uses the butterfly to control idle :-S The cable and pedal are standard all the way to the body - solid connection i mean.. the fbw is activated by motors on the other side so it mirrors the physical side, until it decides it knows better. more investigation needed!

Hi All, Been a while since I've been on the forum, but next spring I want to get my supra back on the road, and I'm sorting all the little niggles before then. Primary thing I need help with is the FBW throttle which after many years of trying to sneak my way around, I'm completely over it and want rid. So... Who's ripped theirs out, installed a cable throttle body and what problems did you have to overcome? I run stand alone fuelling Vpro.. but I expect to deal with; - stock ecu cabling and feedback will be different and light the dashboard up like a christmas tree - installation of an ICV - potential loss of VVTi ?

ahhh.. indeed.. looks like a complete front (tho dont recognise...) but thanks for trying! anyone else?? you know I had one ages ago and pretty much gave it away! doh!!

bump :-) anyone know where I can get a new one at sensible £ or a used one.. saw some on ebay for £75 a while ago.. now all £110 :-(

Hi All, I have a stock front bumper, but am looking for a lower lip for it. If anyone has one, or can point me to a source for them I would be much obliged! cheers Mike

As the title says, looking for 2 stock knock sensors, and their cabling from a donor car.. email [email protected] if you can help... :-)

ryan did mention it :-)

Cast did make a big difference to the bottom end power.. but it's the torque that pushes the car along sub 3500. I used to have a BM 4.4 v8 and the sup walks all over it sub 3500rpm.. I was really surprised. VVTi does sneak a bit more bottom end too, but I don't have aftermarket control of this cam.. the stock ecu is controlling it.... would like to integrate it into the map, but that is a different kettle of fish.

They are on 18's.. and I have 3 full sets ;-) 275, 245 equ... and they stick like (swearword) to a shovel... and don't seem to wear out either.

I have a set of slicks in the garage staring at me every time i walk in... :-) when finances permit, I would like nothing more...

Tell me about it... he was a legend.. and then he went on to another appointment before the end of the day. The crash sounded very bad.. he was lucky.

That's for Ryan to quote for! http://www.2bartuning.com Mine was a special case, more work required, but he's the guy.. 1.5 bar.. I run a cast manifold, stock vvti throttle and plennum, so any more boost would require more gas flow ability which I don't have. It's fairly responsive for a big tubby, and I do like the drivability of the cast manifold. I've started a new career.. self employed; two or three years of very meagre living, had a fire sale of my entire life.. anything that was worth money was sold.. a total firesale. The only thing that remained was the supra. :-)

Met Ryan in Chesterfield yesterday, for a remapping of the car to the T67 on a cast manifold. Saw the aftermath of the incident that caused Ryan to declare "I am never mapping on the road ever again". Infact, as I drew into scoobyworks two guys in trackkies were walking down the country road, car stereo in hand. But that's another story! My story was incident free.. a dam good job, a beautifully clean map, and the bum dyno gives it the thumbs up. No Knock on the dyno, knock sensor much quieter on the road. Would not really want that much more power than this on the road.. well done fella, glad you are still with us..

I had one of these.. it was ok, but the urathane material was a saggy fit! not much air pulled into the engine bay either.

Very responsive, but the car I followed at marham span off the track with half my speed - I was using slicks though! 4.5's are quick, and responsive too... I'd love one.. Michel would be a good judge, his brother or good friend had a V8 with the rose kit on I believe. Have heard stories of daily drivers that have no issues, then there are bad cars that never get used and then occasionally frequently hammered. Not surprised they go bang.

Likewise fella, bad news, sorry to hear.. ***right hand reaches for a torque wrench...