Hey guys I recently got dynoed after adding cams, intake, bov and another relfash from AL. What do you think is wrong with my car. Car seems to be driving great but not making the power it should be. I was dynoed before this and put down best run same psi 316 HP and 351 TQ on the same dyno. Please help!!

http://tinypic.com/4jnn6q
http://tinypic.com/4jnn94
http://tinypic.com/4jnng6
http://tinypic.com/4jnos5
http://tinypic.com/4jnouo

 

Verify your boost gauge is in fact reading correctly.

 

well the A/F looks low, I am not sure what kind of method Al is using to tune the car but the A/F does seem low, maybe its really really conservative tune.

 

So you added an intake, BOV and cams with a through the mail flash? What specific parts did you use? Is the BOV VTA? Did you put on cam gears?

 

Mods are in my signature, bov is recirculating and no cam gears. Car idles fine no stalling, check engine lights etc. The car is just running pig rich and al's last flash did not run this rich at all.

 

First dyno sheet was 324 Whp - and 320 Tq, - you did 5 pulls in the next 18 minutes - perhaps not enough time to cool off between runs? There is a fairly significant collant enrichment table in the evo ecu which makes the a/f go richer when the coolant gets too hot - which is what we can see the a/f doing on your pulls.

324 whp in CO -(assuming high altitude) and 91 octane fuel is a very decent result for the through the mail flash

Don't know how much power you were looking for?

Try some race gas and more boost

 

Yeah I could check that, I am almost positive it is. What do you think about the air fuels if it was leaned out a bit it should be making alot more power?? The guy at the dyno suggested checking spark plugs, but thinks it is the tune? Hopefully Al will chime in, I posted this in his forum too.

 

Thanks for looking at them Al I guess I was just expecting alot more since I put down 316 before cams and intake?? The guy at the dyno was saying my car would do much better on a SAFC II. Do you agree, should I add one on top of your flash. I know we are trying to get a trip together out there for you, do I wait for that?

 

which dyno was this? At what boost? and is your boost tapering down up top?

also, why is your a/f so rich on the top end? doesn't it suppose to be a straight line at 11.5 or even 11?

it looks safe on the last dyno a/f ratio though. but really with those mods, I've seen only about 340whp or a bit more on dynojet... on 21 psi (i think)...

 

It's a through the mail flash isn' it?

 

Al, also keep in mind these are using SAE correction factors in the neighborhood of 1.26-1.28. Uncorrected numbers for those power levels would be in the 250's.

Those AFR's look a rich to me. I'd lean them out and see if the power picks up. I doubt you'll see a signifigant increase with the AFR adjustment alone. If you're going to scale the MAF back, and increase timing as a result you might see more gain than just the leaner AFR alone.

Checking the ignition system wouldnt be a bad idea either.

 

Are you on 91 ocatne ? If so leaner will not help matters.

The first pull was a very good a/f of low 11's which is what i shoot for

Next time - allow a full 10 minutes between pulls as we do at my shop to allow the collant temps to recover

The shop temps were 80 degress

When you are on the road there is greater air flow and more ability to loose heat

Your results are what i would expect at your elevantion in those temps

BTW - a custom tune would prob only net a few more whp

YOUR BOOST level is the key thing to verify - with a second gauge hooked in to test for a accurate reading. IF the boost is falling down up top - check for boost leaks.

 

I disagree - if anything the initial a/f target is high with a high 11 range till the top end and all over 11.5 on this first sheet :



There is NO evidence of ignition issues in that dyno sheet - and no knock

 

Al,

Also, the first graph you quoted as being "good" was almost exactly what I put down with a Buschur stage 2 w/ your 91 octane flash. On the same dyno under the same temperature conditions.

Corrected graph:


Uncorrected graph:

 

Forgive me.. I had overlooked that graph. The others definately show a rich condition.