-*ATTN MODS, IF THIS PORTION BELOW NEEDS TO BE DELETED, SO BE IT. I KNOW RACING IS NOT ALLOWED BUT NEEDS TO MENTIONED FOR A COMPARISON PURPOSE*-

--(A buddy of mine were interested in how much of a gain my new HKS 280/272 cams would do. He has a turbo-back catless exhaust and a flash. We began in 2nd, he got a jump on me, and by the end of 3rd no one was pulling or anything. We were just sitting dead even with him being a car ahead. At this point I knew something wasnt right. I figured maybe a boost leak.)--

The car (to me) seems faster with the cams, certainly a difference in the mid-range but up-top it doesnt pull as hard as I thought it would? It pulls a little better but not real hard.

In evoscan, the load changed alot since before and after cams. Here is a picture. I wasnt sure if the load was supposed to be this drastic of a change with changing the cams.

Here is before cams 1st-4th.


Here is after cams in 3rd gear


The load is much lower up top... which is the turbo is having to work harder up top, it cant supply the engine and this boost leak with enough air so it looses power?, Right? Whats weird is here is a picture when we first started tuning for the cams...The load would actually dip under 200.

 

I would think this should be in the ECUFlash forum...

 

Boost leaks dont have anything to do with tuning. So this is a better choice imo.

 

Wow, im surprised no one has responded. Surely someone knows.

 

You can NOT find a boost leak with evoscan logs or boost logs. When there is a boost leak, the turbo just has to work harder to make the same amount of boost.

 

the load isn't that drastic actually, before cams in third gear it's at about 280 and after cams in third gear it's at about 280.

 

What? Dynoflash posted up logs of his leak. You'll find it in the search button.

 

Well peak, yeah... but I was reffering to the end of the gear... 5000rpm + load drops drastically compared to before cams.

Either way, im just going to do the test & find out.

 

To find a boost leak you must do a boost leak test......end of discussion.

 

WRONG

RIGHT

 

Your right, you are. Search.

 

OK. Believe what you want. I dont care if you and Al think you can find a boost leak from a log. But ill said it one time

YOU CANT FIND A BOOST LEAK FROM A EVOSCAN OR BOOST LOG

 

no substitue for a real pressure test.
oh and take care of those knocks!