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Re: Mk1 172 Hybrid Track Car Project 1.4 8v!! so does that mean it wasnt using the vvt i wonder

wtf lol! i need to get mine tested then too! :D

Re: Mk1 172 Hybrid Track Car Project yep, mines not perfect, but it's still an improvement. i still get 2 limiters based on temperature, they're just a bit low. I'm not sure if its my tacho though so i'm going to try another one over the weekend that i know hasn't been fiddled with :)

that's exactly what mine seems to be doing! (and 6k cold) (mk1 with 172 engine btw)

400-410ish

that's f0xys, yeh

in theory if the CPS wasnt getting a signal at high rpm, it would cause the fuel and spark to be cut, so its a possibility try moving it closer to the flywheel if possible?

oil temp sensor isnt connected to the ecu is it? I've got the mk1 oil sensor on mine and it limits higher on mine, it limits lower depending on coolant temp (like its meant to) - f0xys will limit at 6k regardless. rstuner says his coolant is running at 80-90deg... so spot on

it's bouncing off a limiter at 6k though, not struggling to rev

you'd wake up one morning and someone would have nicked it! :p

that thing you circled is the lambda btw :)

what :eek: can you tell us your rev limit?

Re: Mk1 172 Hybrid Track Car Project large graph of f0xys latest speedo run. (had to make it this large to maintain detail) I have no idea what i'm looking for, but if anyone wants a specific part of the graph done with added data (fuel trim, throttle position etc..) just say :D

Re: Mk1 172 Hybrid Track Car Project I love graphs :o

Re: Mk1 172 Hybrid Track Car Project yeh doesn't look right, only peaks at 80-something % too, though that doesnt account for the waaaaaaatatatata limiter

Re: Mk1 172 Hybrid Track Car Project and here's a close up of 400-500s with engine speed and throttle position throttle position never goes below 10%

Re: Mk1 172 Hybrid Track Car Project my apologies, you're correct here's a zoomed in section of his 0-100mph run with the speed data (+smoothed) so, speedo sensor is working properly! :p

Re: Mk1 172 Hybrid Track Car Project just knocked up a quick graph of that data one problem i can see is that at about 500s, he does a run from slow to about 100clicks with a few gear changes on the way. the revs rise and fall as you'd expect when you change gear and accelerate, however...

Re: Mk1 172 Hybrid Track Car Project looks like the mk1 sensor is compatible you cant use the mk2 as the mk1 speedo is mechanically driven, so needs a cable. the mk1 cable just happens to have the signal generator built in :D

Re: Mk1 172 Hybrid Track Car Project :S wierd did some further testing on mine today, it seems to cold limit at 6k and warm limit at 6.6k... something is up :/

you're reading it wrong :p, the SC has higher torque and bhp throughout the revs :edit: touché

mine was never tappy :D - just rattly.. and knocking... ffs :dapprove: anyways, does your speedo cable have a connection like this:

from the few pics ive seen of r5 clocks, the speedos look the same (or atleast interchangable) to the mk1 clios worst case you just swap them over and run a clio cable!

the ecu needs to know the speed to control the fan and limiter atleast not sure if it calculates load or overrun etc using it or not?

oh? sounds wierd what does the r5 use the speedo signal for? they're carb arent they? got any pics of the speedo cable?

good work! what was the fault in the end?

on the speedo cable there should be a plug with 3 wires (yellow, white black), the middle one is a signal wire and needs to be connected to pin 53 of the 172 ecu

yep, the only 'mod' it needs is the speed sensor its a nice variable speed fan too :) so you pretty much never hear it

mk1 coolant temp sensor into mk2 thermostat housing drill through the housing and slot the sensor in. then secure it from behind with a suitable thin nut. also worthwhile using some sealing washers and silicone to stop it leaking :) - mines been fine up till now. careful with your placement...