I am going back to re-tune my set-up. Which consist of:
84x89
B20 with stock rods and RS ITR's
Cleaned up PR-3 cylinder head
s2s2 with s2 spring/retainers at 0, 0
Ported GSXR ITB's at 48mm
RMF drag headder
2 1/2 generic exhaust
410cc Acura RDX injectors at 55psi

Here is the dyno graph of my last dyno session


What I'm trying to achieve is to make that dip disappear. Can anyone give any suggestions as of how to make that go away or maybe make it smaller than now? Tuning on Crome Pro.
Here is a video of the car for good measure.
http://www.youtube.com/watch?v=kBbhs9EFFCI
Let me know if you have any suggestions. Thanks!

 

When does vtec engage?

 

5800rpm

 

wow you need to fix your tach lol

 

Play with that. Usually setting that higher massages that dip out

 

Tried.
Went all the way to 6.5k. Not much difference. I was thinking cam gear movement. Looking for a good starting point more or less...

 

I had that huge dip also move the vtec engagement to 6.3K and messed with my cam gears a little right now i'm ex -1 and in +2 but this is on BC Spec 3+ i don't know how those compare to S2....i made 217whp @ 8.3k maxing out the stock injector need to slap my 440cc and a retune should make a few more ponies up top....my set up is a little similar to urs just a few different things here and there but that should give u an idea...

I noticed ur RPM bouncing around like crazy i had that problem on a GSR turned out to be a faulty crank sensor... just and FYI...

 

What does the A/F look like in that area? Also, did you adjust the ignition values?

 

A/F was at around 13.2 and didn't notice much difference with ignition advance.
LoL
It's funny how we are complete strangers on HT.

 

No we are not. You are still one of my best buds.

But seriously, that does not look like a resonance hump. If the A/F is good then I would say it is time to start checking ignition. Did you retard ignition also?

 

No, didn't retard ignition.
I'm going to have to go over and spend a weekend at your place and hit up Innovative. I'll call you.

 

I'm going on the 26th to fix up the tune on the hatch, you coming down?

 

Hell yeah!
I got vacation the week of the 28th.
I'm going to find you a set of OBD1 injectors by then.
Wonder if they have enough time to strap my car on the dyno that day.
Going to call Innovative sometime this week then.

 

Don't worry about injectors. We should have plenty of time.

 

Sweet.
We shall see what the dip is all about then.

 

Just got back from Innovative. Here is the dyno sheet
231whp
162tq
Tuned by D-Rob on Neptune.
Car needs a 3" exhaust in the worst way!!





Big thanks to D-Rob, mar778c and furyof4 for the support!

 

Glad I could help, gentlemen!

Car makes great power.

- Derek

 

that tach is crazy lol

 

Doesn't work at all now. Had it fixed but broke on the way down to PA.

 

Here are the videos!!


http://www.youtube.com/watch?v=_qqvu...eature=channel


http://www.youtube.com/watch?v=kCfT5...eature=channel

Enjoy!!

 

Us b20vtec's rising up..

*slaps d-rob's **** when we hanging out boi.

 

Maybe soon...

I am working something up with some RSX guys that are need of a tune to fly me down for a weekend to just outside of New Orleans, LA.

- Derek