richard i new the idle was going to be a bit lumpy after fitting my comp cams stage 1 but i must say im not a great fan of it 🙁 any chance it may smooth out a bit the more i drive it as ive just reset the ecu dunno..
edbutler Im afraid it wont sort itself out mate 🙁 Ive found that different FPR configurations cause different idle conditions (i.e. when my FPR was blocked, it seemed to idle fine!) You'll ideally need a remap to help sort them out. Vocky had also noted that a Balancer shaft delete help smooth the engine out, as they are no longer balanced! 🙂
vocky certainly the balancer delete mod will sort out the lumpy tickover, but otherwise you will get used to it 🙂 you just need to even out the flow a little, so the dbilas exhaust manifold will help
n17ves richard said: i new the idle was going to be a bit lumpy after fitting my comp cams stage 1 but i must say im not a great fan of it 🙁 any chance it may smooth out a bit the more i drive it as ive just reset the ecu dunno.. With piper cams and no balance shaft mine is far from being smooth. However hearing techiboys VX at the national yesterday, his seemed to idle much better which could be because of the remap what.. .
vocky I think thats because the cams 'might' be standard, we couldn't suss out whether they were stage 1's or not
rik1083 well.. with the balance shafts removed, the engine does vibrate more, there's no doublt about that, but that does make the lumpy idle from the cams much less obvious. I have the two yellow engine mounts too.. so less vibrations get absorbed.
vocky the engine vibrations from the cams is caused by too much air flow at tickover, so a remap would make it less of an issue I have a pair of uprated mounts, no balancer shafts, piper cams and with my itb's I have a perfectly smooth tickover 🙂
winstar vocky said: the engine vibrations from the cams is caused by too much air flow at tickover, so a remap would make it less of an issue I have a pair of uprated mounts, no balancer shafts, piper cams and with my itb's I have a perfectly smooth tickover 🙂 lumpy idle is also caused by the valve overlap of the cams allowing exhaust gas to flow back into the inlet maifold a low revs, ITB's stop this and allow much wilder cams to be used without affecting the idle.