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I have a Evo 1 and I've just fitted new Kelford 272's and a custom td05 20g 6sl2 11 blade billet wheel but I'm finding it very laggy ie peak torque around 5000rpm
I've set the cams to +2 ex and +1 in
Two quick observations...
(1) You appear to have a problem, and it isn't the cams. It could be a substantial pressure leak and/or a tuning issue. That turbo cannot possibly be that laggy.
(2) Your +1/+2 (in/ex)cam timing adjustment widens the LSA from 110 to 112 deg, and that isn't going to help. +1/-1 will help, but it won't fix the root cause of the issue.
(1) You appear to have a problem, and it isn't the cams. It could be a substantial pressure leak and/or a tuning issue. That turbo cannot possibly be that laggy.
(2) Your +1/+2 (in/ex)cam timing adjustment widens the LSA from 110 to 112 deg, and that isn't going to help. +1/-1 will help, but it won't fix the root cause of the issue.
I have done a pressure test and it holds near 28psi with no leaks, that's with the evo 9 bov still on as well
fitted a new forge actuator with a 20psi spring and adjusted preload correctly.
Already had the turbo sent back and re checked but they found nothing wrong infact they blamed the cams so I invested in adjustable pulleys
I am still running the same map which I had done on stock cams, Its a evo 6 ecu, with 3 port and denso 660 injectors
All I've done to the map since fitting the cams is remove some timing to shift knock and got it to run a tad richer top end still spools 12.5ish but drops into 11.5 at top rev's
Looking for some can gear settings for a S1 cam on a 2.3 with a EFR 7163. I need all the bottom end and mid range power I can get as this is a autocross car.
Any help would be great
This reduces the LSA from a leisurely 110 to more aggressive 107, resulting in a choppier idle, but quicker spool and more midrange torque.
Originally Posted by brianawd
looking for some can gear settings for a s1 cam on a 2.3 with a efr 7163. I need all the bottom end and mid range power i can get as this is a autocross car.
Any help would be great
The S3s will give slightly quicker spool with the intake at 0, although the short rod/stroke ratio of the 2.3 should yield a little more power upstairs with the intake at -1 or -2. The reason for this is the short R/S ratio means the piston moves faster around TDC, which has the effect of behaving as if the intake cam is slightly advanced. Because of this, a 2.3 needs the intake cam slightly retarded to give the same characteristics as it would with the shorter stroke 2.0. If you have a IX and are using MIVEC, you would simply reduce the advance a bit after the turbo has spooled.