my 2003 bounces off the rev-limit - maybe they changed it after that?

For those who are posting form different dynos - its irrelevant unless your car was at the same dyno

However - your numbers are coming in very low even on the 2nd dyno. Even up at high altitude w/ just a axle back and intake spacer I pulled 222 on a dyno that reads very low - that was at 4600 ft above sea level. Since then I pushed a lot higher - and you should be seeing gains of at least 25-30 hp from when you first started w/ a stock baseline.

 

Im sure we all know dynos are different unless done same day on the same dyno.

If you noticed all the dynos posted are from the same type of dyno a mustang. I don't expect him to pull the same #s too many variables, but be within 15-20hp hopefully.

The OP should post the dyno he emailed me last night dyno sheet looked like a liar polygraph.

 

Your tune sucks... way too rich up top and all over the damn place. I wouldnt want it dipping past 12.6 or so and honestly my car is 13.5 most of the and dips to about 13.1 (but im on methanol). This tune is killing your power and mpg.

 

It is stock tune from factory on 87 octane. I expected AFR to be wack but wanted to see what power output it puts down with lower octane. I will probably go back some time in the future to retest and see how 93 octane does. Car is a daily driver to get me to and from work so I can make $$$. I don't see myself pouring thousands of dollars to gain 40hp. I rather ditch the vq and pick up a ls1 after I retire the car from daily driver and get a replacement commuter vehicle.

 

You obviously know a lot about how engines work. You should open a shop and start tuning professionally

 

Return on investment is crap in that field. I prefer other avenues to make $$$ and plan to stick to that. Thank you very much for your advice and I will ponder upon it for .003 milliseconds.

 

like running 87 octane in an engine specifically designed for premium? Good luck with that, your shortsightedness in saving 20 cents a gallon will be reflected with a potentially damaged engine, more wear and tear/ maintenance issues, lagging performance, and crappy gas mileage.

If you want to maximize your "investment" please go buy a civic

 

I ran 87 octane for a month to see the effect first hand and dyno test for my own curiosity. Other than that month it has always seen top tier rated 93 octane. Not really worried about the engine with IPP in my backyard. Civic might be fine for you but I prefer a luxury sport sedan. Thanks your your precious input.

 

um, ok?

 

You and i think a like lol... Running 87 as they say in fast and the furious... is a good way to spend 10 grand (after when you blow your motor)... Seymore4 is a well known tuner and pretty knowledgeable on these platforms. I personally have also run 87 (did it one day when my station was out of 93 and no one local had it within 5miles and i needed it and wasn't going to dump my c16 in)... I also was on meth injection (kinda makes up for the lack of knock resistance)... even with my nitrous map (lots of fuel lots of timing) the car ran like **** and i only put 2 gals in (now im cammed so...) but idk why you would ever think saving $3-5 a week on gas is worth losing that lux and power you speak of. It prob sounds like a popcorn machine.


What that dyno sheet is showing is= lean lean lean lean... and knock knock= pull timing add fuel rich rich rich rich (still knocking) rich rich rich...

 

No pro on this platform would ever recommend cams for an NA build unless also building the bottom end for higher compression. Even with free labor, it just does not make sense.

Anyway, now that its done and you don't have the power you're looking for, how do you know the cams have been properly installed? It's either the tune (as others have indicated) or something was mucked up in the install. The S1 cams should show a gain in the upper midrange, well past 6k rpms. Call Jim Wolf and talk to him, or better yet, have your installer call him and go over the install.

 

eh... Im cammed stock bottom end (future plans to build but in the past didnt know what I wanted and had other projects) and it was one of the best mods to the car... NA for NA when I run a 6mt i pull 3-4cars by 65-70 from a 30 roll (on my 3.3 diff) and on nitrous ... well Im sure it's helped because the car is making decent power.

There are tons of great na builds using stock bottom end that are running close to sc/boost times at the track... Look at Darron's car... The oem cams aren't very good and there is a lot that can be gained. Not everyone wants boost or xxx power. Calling cams a bad idea on stock bottom end is silly when it's getting close to 300whp on a de (more if ur willing to push it). 300whp NA on the g/z is pretty fun to dd...

Some people build in stages as well. Cams for NA are a great mod.

 

You are missing the point. Your personal street racing/butt dyno impressions are irrelevant (not to mention you threw nitrous into your statement ). I'm not saying cams won't usually make "some" power. I am saying that the cost/effort for making relatively small gains with cams simply do not make sense. Cams are really only worthwhile IF you are building (dropping) the motor anyway.

EDIT: And there are no "great" mods for NA 6MT, other than a spacer, gears, and if you like noise, throw in a nice exhaust, but everything else has significant downsides. Your 3.3 gear on a 100/150 shot does not make any sense either. You will be faster in every gear with a 3.5 and some better tires and optimized alignment.

 

I'm talking about dyno results as well as real world track results. Sorry I don't post on here often enough for my opinion/experience to count

If you won't take my word for it talk to https://g35driver.com/forums/members...dsskyline.html who is in this thread above and cammed on stock bottom end and has one of the quickest 1/4 times na and spray and when he was boosted. Oh and he is a 5at...

(fyi I have a 3.69/3.96/4.08 setup. I dd on the 3.3 as im a 5at...) Btw I have great tires... If M/T ET DRAGS are not good enough for you... and on the street I have a few sets of wheels and tire combos... not eveything is as you think it is.) But your an expert and HAVE TRIED THIS RIGHT?

 

The trick and truth to Cammed VQ's is to leave the exhaust cams stock.