DYNO - NISMO CBE and K&N Dropins
 

Took the Z over to be dynoed on Saturday, see the chart below.

Seems to me like the NISMO OEM CBE is pretty badass, even if it isn't very loud..

Also, the K&N Dropins made quite the difference.. :happydance:

Oh yeah, we somehow lost the chart for the first pull we made that went to 7300rpm before the drop ins.. We know it was 293 @ 7141rpm though (took photo of the result screen)

Very nice gains with budget mods -- congrats!

I'm all about bang for the buck :tup:

Yep yep, can't complain!

Some serious mods coming very soon though, watch out for new dyno charts showing the big numbers :)

I'm still stressing over those filtration tests that show K&N to "not filter very well".

Then on the flip side, you have Ford putting a similar intake OEM on the GT500, and then warrantying it for 5/60 with longer available.

Not sure :/

So 293 was with the exhaust only and 309 was with drop-ins? Just trying to gauge the increase in power.

Yep.

We did 3 pulls, put the filters in, did 3 more (with enough time between to keep the oil temp consistent).

So, you're saying that adding drop-ins gained another 16whp? If so, that is amazing!

That's what I'm saying.

Mind you I have the CBE as well, which is good for many HP's and enhances any intake mods you may add.

interesting

Do you know how much did the AFR and oil temp changed between runs?

I read a thread a while back showing that oil temp in this car can vary the results by a few WHP. I usually hear the drop-ins give ~5-ish WHP--great for how cheap they are!--so I would wonder if you got an extra kick from AFR and/or oil temp at the same time.

That's some nice gains on a budget!

What surprised me is that on the graph it shows the car got richer with the K&Ns vs. without. I'd have expected the opposite, but maybe the MAF system adjusted for them and added a bit of fuel.

That's just the WB stuck in the tailpipe, so not really accurate.

I will try and get the data logs from Dan @ OPS and post them.

But it was stuck in the exhaust for both runs correct? Still relative I'm thinking as it'll read a few ticks leaner at the tail pipe vs. pre cat.

Or maybe the car haden't adjusted entirely and was trying to compensate for the new filters since it sounds like he switched them on the dyno??

Do you mean the comparison test vs. various other filters on that Supra forum?

If so, it still performed 2nd best of the lot.

Dry mediums tend to filter marginally better, but they also tend to flow a bit more poorly when clean (although, they do flow better when caked with dirt...).

Anyway, you should be fine with either a dry synthetic or oiled cotton medium.

Link?

:iagree:

Why are we even messing with aftermarket CAIs!? :bowrofl:

I just put K&N's and MAF tubes on my car. While it feels peppier with increased throttle responce and more power, I wasn't expecting 16whp or anywhere near that. Hell, I would be truelly happy with 10whp peak.

It's $100. I'd be happy with 5whp gain. Goes to show, once again, how the stock intake box is plenty efficient. I'd be curious to see what gains the OP would get on this particular car and dyno if he installed the Stillen Gen 3's.

I am not saying my gains are typical, but they are real.

We're probably going to go with an AEM intake rather than the Stillen. Reason being we can ditch the ETI module when we put the uprev tune on it and have a larger intake tube overall.

I would also say it's more like 13whp, since the 293whp on the baseline was at 7100ish rpm and the 309 we got was at 7300.

I apologize for the inconsistent baseline vs modded charts, we were rushed. :(

One easy way to test to see just how restrictive (or non-restrictive) the stock air filters/boxes are would be to just make a dyno run with them on, then take them off. Can't get any more open than that. With the hood up on a dyno and fans blowing on the motor it's gonna get cool air making the CAI test kinda moot as they would be somewhere a bit less than just no boxes at all.

Well, that changes everything... maybe.

Peak power is that, peak power. It might have peaked at 7100 before and now peaks at 7300 with the filters. BUT, if power was still climbing on the 293whp pull and the run was stopped at 7100 prematurely, then the gains are slightly false and more than likely less than what we are all going with at this point.

It's not that huge of an rpm difference, but I do see your point. The graph looks pretty linear though and pretty decent amount of gain looks very plausible.

Nice gains!


I made 22whp over my baseline with just exhaust and test pipes, glad you like the results!




DAN

Thanks!

Are there any other filters that drop-in to the OEM air-boxes?

I think HKS and Cosworth both make dry element filters.