Thread: Yada yada, more dynos.

Here are my two maf scales. First one I dynod at 361whp. The 2nd one was 21psi, instead of 16. Anyone have a maf scale so you know about what power you are at?

No offense man but do your responses have to always be 2/3 about your setup? Everyone knows what you are up to. Its phenomenal but ....

Looks like a hard charger Coheed. Thanks for sharing.

not all my posts are this way, some yes, but all no, I dont have my own thread about my own setup. Im sure coheed doesnt mind me sharing on what my turbo looked like when i rebuilt it. I dont feel like making a new thread saying i rebuilt my turbo and im gonna be heading back to the dyno soon. If you look at coheeds posts in other peoples threads he explains things the same way. No need for a whole new thread to say what people is up to.

This general thread is talking about power he made and comparisons are always a good thing. Its not like i was completely off topic like hey guys im heading back to the dyno.

I made a comment concerning his posts and added a bit in. Its ok. If coheed doesnt like this then he can let me know.



Anyways Coheed whats up with the huge dip in the A/F reading, Is that your VVL point, Thats a huge dip i know its a sudden change in flow of air but dang, Its almost looks like the throttle was let off and then back on.

I don't mind at all. the dip is caused by the hiccup when I shift. The car seemed to buck a little bit on the shift, which I think is a byproduct of my blow-thru. You can see where I shift, the maf voltage drops; comes back up again, dips for a sec, then comes back up.

You feel it when driving and it bugs the hell out of me. The couplers on my setup are 2.5-3" adapters at the maf. So it goes from 2.5" to 3" at the maf, then right back to 2.5" after the maf. This may have something to do with it. Maybe if it were 3" throughout it wouldn't be an issue, but I am going back to pull-thru. The AFRs, and response was actually better! Blow-thru is not all it is hyped up to be, and I showed last year how it can hurt your setup if the tune isn't spot-on. We made 30whp when changing back to a pull-through because maf readings were more accurate.

I just really wanna run a more effective crankcase vent system, and pull-thru will be more reliable with it the way I want it.

I would like to see some data from some big # setups running this Z32 maf to see what kind of voltage they hit. If we get a good idea, then maybe someone can make a chart with voltage vs WHP.

4.7V should be 400whp or so.

Quote from PAYU


This is exactly the voltage I see on my maf. Now, that should say something. I am at 4500ft too. But pushing 22psi of boost falling to 21 quickly afterwards.

Even at 25psi I bet I won't break past 4.85V. Maybe if it were below 80* outside, and sea level I would nail at least that much.

Its just hard to read. I just skip your posts mostly choeeds mmv.

ok that makes sense on the voltage drop, i thought that was from your dyno run. I was like man thats a huge drop. haha

Im sure there is some differnece in changing piping size, Matter fact i just changed all my piping so that its all 3". The way i had it before it would go 2.5" out of the turbo to 3" at my bov adapter. 3" to intercooler, 2.5" coming out going up into the bay to the maf, 3" on the maf and 3" to the throttle body.

Now after i rebuilt the turbo i redid all the piping so its much cleaner and i dont have 3" couplers clamped down onto a 2.5" pipe. Its all nice and smooth all 3". Its gonna be real nice after the mani goes on and the Q45 throttle body is 3" as well. It should make for a very nice smooth flow with a very nice gain. haha

Ive been runing my z32 maf in blowthrough since the beginning and have yet to really see any problems but you are right, The tune at first was very finiky and required some adjustments to get it to run spot on. Now im gonna have to make more changes, Also cuz i noticed when i redid my piping i had a nasty boost leak at my bov due to the tial knockoff, the bottom plate that seals it fell off. I noticed the car is soooo much more responsive partial throttle and full throttle throughout the band and the wideband is showing it to be a little bit leaner.

I might actually be able to have my vac line on my afpr now and fine tune it once the mani goes on.

High hp motors are very finiky to get running very smoothly. lol

What is the observed number and SAE .. ?? send me the file.

regards-

I wish I had some sae numbers, I will see if they can get me any info on my runs to see what correction was used.