UNREEEEEAAAALLLL!!!!!!!!

 

As stated earlier in this thread my car is making great power and only on my base tune running the Revolver cams on 91 petrol. My engine is neither built nor do I have a ported head so that excuse about the only success stories being from people with ported heads and built motors should be ruled out. I have to say my set up is not radical at all.

 

Would these cams help on spoolup? How much is a whole new valve setup with these cams?

 

It's hard to see that you're making great power, honestly. I have no idea what kind of power your car was making on stock cams, and I don't see a horsepower figure on your graph. I see a torque line that peaks about 290 lb/ft, but that's about it. I don't know how the HP line relates to the torque markings on the left. Also, keep in mind that you have a larger turbo (compared to mine) as well.

I assume you've made some gain over the stock cams with your car, which is encouraging to those considering these cams on a stock head.

 

i've calibrated the cams on stock ecu (EcuTeK), Motec M800 OEM with stock Karmann Vortex, Several with Autronic SMC speed density and AEM EMS speed density with no issues... stock turbo, bigger turbo, stock head, big valve head, 2.3L, 2L whatever... granted there are some tricks to a good idle with a factory ECU and flash, but it all works out the same...

i just don't understand why these cams are such a struggle for some people

 

In my part it is my fault for not posting my stock charts but I dynoed my car stock and it only dynoed 230 whp and 244 wtq on ATP's dyno in Union City Ca about 2 years ago. My car was pretty much stock for those past 2 years. Then went straight to the set up I have now about 4 months ago. I might be able to pull up those graph charts if I have them still from when I was stock but i really don't see the point.

My graphs seem kind of clear to me but I'll explain. The first chart is from my base tune on a Mustang dyno with the cams set at -2,-2 the red line is WHP, the Blue line is WTQ, and the Black line at the bottom of the chart is AFR. The second chart was from a DynaPack dyno system with the cams set at -2,-4 thats the only change from the Mustang to DynaPack, that chart (DynaPack) should be pretty self explanatory. I would also like to stress its not the numbers you put out on a dyno that is important its really all about your powerband and safety of the tune.

Sounds like a personal problem J/K. But really its not really the size of a turbo that matters its more of the tune and reliability you should be focusing on. I don't really like posting my dyno charts due to fact that most people just look at numbers and rarely pay attention to the powerband and reliability issue of a tune. But hey if thats all you want is high numbers without reliability then your doing great and going down the right path (poor engine). I guarentee that my engine will outlast yours by just looking at your AFR chart. Man your car must have been detonating and most likely it was probablly audible did you hear anything or pick up anything with your DSMLINK?

 

I think Pd1 mentioned that the wideband wasn't working properly. His datalogs show good AFR's IIRC.

 

That's correct. My EMS' estimated AFR (which uses the narrowband O2 sensor and a few other factors) as well as my AEM wideband sensor are in agreement that the TT DynoJet wideband was not reporting accurately. My AFRs for all of the runs were between 11:1 and 11.5:1 at full boost. The knock sensor does appear to be working properly, and is being properly monitored by DSMLink. This is evidenced by the fact that I did see some knock, and was able to tune it out by retarding timing or adjusting mixture.

 

awhile ago I posted saying there was some problem with the Revolver install on my car. Some one wanted to know what it was.
The shop told me one of my coil-plug assemblies had gotten dirty or was loose. so likely not relevent.

 

Yes, all the cars I have tuned with the Revolvers have had the AEM EMS in them.

David Buschur
www.buschurracing.com

 

Is there a way to get these cams to run on a Hexy Flash or ECUTEK?

 

I do know that the pcv valve gets noisey on the evo when the idle gets rough and dips. I installed the big crowers in a friends car and is seemed like when car started to idle rough and the vaccum dropped the pcv valve would rattle like crazy. Just a thought.

 

Very interesting thought. Thank you. I wouldn't think, though, that the PCV rattle would continue during off-idle conditions...would it?

 

Just out of curiosity, when was the last time you calibrated your wideband sensor, where is it installed, and which direction is it facing (i.e. where does it protrude into the tail pipe, top, bottom, side)?

l8r)

 

My wideband sensor is brand new (3 months old), and was calibrated by AEM upon its construction. There is a calilbration certification sticker detailing the results of this process on my specific sensor.

The WBO2 is installed in my resonated test pipe. With regard to its orientation, if you're standing under the car and looking forward at the back of the test pipe, the sensor sits at approximately 4 o'clock (if 12 o'clock is on top, and 6 o'clock is on bottom).

There is a 0-5V analog output wire coming out of the gauge that is then fed directly into my ECU for logging. The values displayed on the gauge are exactly the same values that are captured in the data log via my EMS. I validated this upon installing the sensor.