You might want to start Google'ing some of these questions. Compression tests are very common with a plethora of information out there. It will ultimately help you.

 

Thanks. Will do.

 

There is no magic number as long as they are all close to each other within 10 psi or so. For this motor I would say you should be seeing anywhere from 225-250psi in compression. It just depends on how old the motor is.

The stock exhaust has made over 400whp in turbo charged applications. This was with the AP2 exhaust though.

 

Alot of s/c guys are initially disappointed with the upgrade because power delivery is so smooth.
It seems like there should be more umph. Its there, mostly at the top of your rpm band.

I have nearly identical setup. Not many cars can keep up. I also enjoy carnival rides like the tilt a whirl and gravitron. But not going to join the circus so I can get shot out of a cannon.

Btw... get yourself some good brakes and tires.

 

Yeah. Superchargers on our cars don't get the Credit they deserve. They do make it a lot quicker. It just doesn't feel fast. But....I say get a smaller pulley, and you might be happier with the results. The WHP that supercharged cars put out are a little deceiving, because we only make that much power at the very top of our RPM right before we have to shift. Not saying that Turbo cars aren't the same, but Turbo cars make more power in the midrage then supercharge S2000's. The Plus about a supercharge setup is that power deliver is gradual all the way through the RPM.

 

Will have my compression tested in a while. Thanks!

I am really enjoying the ride and enjoying doing butt dynoes lol
Yeah ill get a good set of brakes pretty soon. Thanks!

I so agree with your statement that SCs dont get the credit they deserve. Linear and smooth delivery of power, responsiveness, and reliability are not taken into consideration when most of the people here in PH notice my SC. They always ask "Why not turbo?" Apparently, they are in love with the abrupt power delivery of the torque generated by Turbochargers

 

Added the following tables on first post.








I see big dips on my TQ table and HP "Flattens" on 4.5k 5.8k and dips on 8.2k.

I think those flats and dips are what's limiting the max power generated

Is my belt slipping? If not, what could be the possible causes?

The Boost doesn't seem to be affected though. Steadily rising all the way to 9k rpm.

Sorry, the peak boost was in fact 11psi.

Is my AFR rich or lean?

 

Your afr tune isn't that great. You can follow the rich afr dips and see the power dips there. With proper timing 12-12.5afr range is totally safe/reasonable (with leaner in the lower rpms) and look how much more efficient that is on your dyno when you compare the same rpm with your fuel map. Boost looks proper, no slipping. I would like to see the timing table now. The afr at peak 11.2 is overly rich inmop for your boost amount. Just raising it to 11.8-12.2afr would likely get you about 10-15whp alone without any other changes.

Vtec should be set between 3500-4k to not only smooth out the power band removing the "Hit" but increase your hp/trq significantly from that point to stock 6k transition point, it appears they did this to some degree. For your info, timing from the new lower point at say 3500rpm should be increased on that cam up to the stock 6k rpm point to smooth out the timing curve there. The secondary vtec cam needs timing when you study the factory NA tune, so since you are lowering it now, you need to add some timing in that 3500-6k rpm area.

 

As Junky pointed out, you can clearly match up the dips in the AFR curve to the dips in your torque and power curves.

I've been following this thread because I'm suffering from a similar issue, but after reading through some of these posts I believe mine can be attributed to the tune as well... mainly my target AFR's and my timing tables.

I'm running a Novi 1220 peaking at 13 PSI and was only hitting max 310 HP on a Mustang Dyno. I also have the stock exhaust (w/ test pipe) and thought that was holding me back but after reading some of the comments here it sounds like that shouldn't be hurting me this much.

The car runs, so at this point I'm just waiting for the weather to cool off a bit, for my catch can setup to get installed, and to take it to another (more experienced) tuner to sort this out. I HATE not knowing much of anything about tuning.

 

swap to 1200 blower. night and day difference.