Dyno Results - Page 3

wait4me · #31 (**permalink**) 07-06-09, 07:14 PM

Yeah i know razorecko. The autos have been dynoing larger numbers than the manuals, So i do tell them different numbers from manual vs auto. As i was right on in the numbers with the mods on kencavs. Well i was 4hp low i think.... I try to make all the numbers fair. All the numbers have been in independant dynos with no number fudging all over the USA.

kencav · #32 (**permalink**) 07-06-09, 07:37 PM

Quote:

Originally Posted by CadV

Gonna check and change the spark plugs see if that makes a difference. Right now the lower rpm's are very sluggish, shifts are sloppy. Once the RPM's build up it is much smoother but I am missing a lot of power for sure. Any higher gear low RPM scenario where more gas is being dumped in the cylinder it runs crappy.

Just running the stock tune right now and not giving enough gas for the blower to kick in.

I am working with Jesse on it. He offered to work on it for free if I bring the car up. I just need to prove there is not something mechanically wrong with the car or it will be a wasted trip.

The tough part has been the different stories I am getting from shops I talk too. The stories are not consistent and most of the time vary quite a bit. Their stories prompted me to create this thread in the first place. At least Jesse has worked on our cars so I am trusting his advice. Including the other shops has just made things worse and more stressful.

Jesse did say that a totally stock car and tune with 2.55 upper should dyno at 560rwhp.

If changing the plugs doesn't work I am backing out of all the mods.

CadV- unless you go totally back to stock I would consider taking Jesse up on his offer if you have the time to do it. Like yourself I am going thru the trials and tribulations of modding a relatively new production car with performance packages and upgrades in the infancy of their developement. You payed alot of money for this car and judging from many of your great posts/photos are very passionate about vehicles and in particular your CTS-V. Apparently no one has "logged as much flight time" as Jesse in the engine bay of these cars. If these things are in part leaps of faith that seems the logical way to go if possible.

Gary Wells · #33 (**permalink**) 07-06-09, 08:09 PM

Quote:

Originally Posted by wait4me

Yeah i know razorecko. The autos have been dynoing larger numbers than the manuals, So i do tell them different numbers from manual vs auto. As i was right on in the numbers with the mods on kencavs. Well i was 4hp low i think.... I try to make all the numbers fair. All the numbers have been in independant dynos with no number fudging all over the USA.

Jesse:
Not to be disrespectful nor to bogart this thread, but I would swear that I have read on this forum that every time comparison #'s have been discussed with everything the same excepting trannies, the manuals always produce more RWHP & RWTQ. Am I slipping?
TIA/R: Gary Wells

kencav · #34 (**permalink**) 07-06-09, 08:17 PM

Quote:

Originally Posted by Gary Wells

Jesse:
Not to be disrespectful nor to bogart this thread, but I would swear that I have read on this forum that every time comparison #'s have been discussed with everything the same excepting trannies, the manuals always produce more RWHP & RWTQ. Am I slipping?
TIA/R: Gary Wells

I was under the same perception

Razorecko · #35 (**permalink**) 07-06-09, 09:58 PM

I think it was a slip of the word - no way an auto will dyno more than a manual- theoretically not possible

RapidRob · #36 (**permalink**) 07-06-09, 11:06 PM

^^^ Yeah - gotta be a slip-up, (due to stress perhaps ...

)?

Rob

CadV · #37 (**permalink**) 07-19-09, 11:36 PM

Here's an update...

1) The K&N filter oil messed up my MAF sensor. I was using wait4me's kit. Here is information straight from GM on what I was experiencing. Needless to say I will never use an oiled filter again.

Quote:

04-07-30-013B: Info - Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES) Light On as a Result of the Use of an Excessively/Over-Oiled Aftermarket, Reusable Air Filter

Subject: Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES) Light On as a Result of the Use of an Excessively/Over-Oiled Aftermarket, Reusable Air Filter

DO THIS DON'T DO THIS
First, Inspect the vehicle for a reusable aftermarket excessively/over- oiled air filter DO NOT repair MAF sensors under warranty if concerns result from the use of an excessively/over-oiled aftermarket, reusable air filter.

The use of an excessively/over-oiled aftermarket, reusable air filter may result in:
• Service Engine Soon (SES) light on
• Transmission shift concerns, slipping and damaged clutch(es) or band(s)
• Engine driveability concerns, poor acceleration from a stop, limited engine RPM range
The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.

When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively/over- oiled air filter. The MAF, GPS reading should be compared to a like vehicle with an OEM air box and filter under the same driving conditions to verify the concern.

The use of an aftermarket reusable air filter DOES NOT void the vehicle's warranty.

If an aftermarket reusable air filter is used, technicians should inspect the MAF sensor element and the air induction hose for contamination of oil prior to making warranty repairs.

Transmission or engine driveability concerns (related to the MAF sensor being contaminated with oil) that are the result of the use of an aftermarket reusable, excessively/over-oiled air filter are not considered to be warrantable repair items.

2) I was also experimenting with an induction kit (rerouted the brake duct up into the airbox) but it was actually forcing too much air at higher speeds. It could also be the tune is not configured to support something like this.

3) The NAPA belts stretch way to much in the Texas heat. For example 080670 with 2.55 upper and 8.5" bottom it has a tension under the half way mark on the tight side. After a week or so of driving it is right under the loose line. I have a heavier duty belt on order and should be here tomorrow.

The above items were causing my sluggishness and a shutter when I was in a high gear low rpm scenario. I have no idea if this was causing my poor dyno numbers but I will find out this weekend. My belt is slipping right now so once I get my heavier duty belt I will let you know for sure.

RapidRob · #38 (**permalink**) 07-19-09, 11:44 PM

^^^ Thanks CadV - I was wondering. Are you on the W4M CAI now, or on the modified factory intake?

Rob

CadV · #39 (**permalink**) 07-19-09, 11:55 PM

Quote:

Originally Posted by RapidRob

^^^ Thanks CadV - I was wondering. Are you on the W4M CAI now, or on the modified factory intake?

Rob

Modded stock.

When my car is running good I will share more specifics. I just don't want to get ahead of myself because something mechanical could still be wrong with my car.

Some people are not going to like what I have to share but I don't want anyone to have to go through this.

CIWS · #40 (**permalink**) 07-19-09, 11:58 PM

Glad to see you're making some headway with the car and it's issues

jwa999 · #41 (**permalink**) 07-20-09, 01:12 AM

Thanks for the update, Cliff. I kept wondering what had caused your problems. Could have been the P-Valve. A friend of mine also mentioned overly oiled k&n filters can cause MAF sensor problems. So did you simple clean the MAF sensor?

I was just looking at ordering the full air intake from Jesse. I guess you have to use your MAF sensor from the stock box. I was going to ask him if he has spare MAF sensors. Couldn't find the acdelco maf part anywhere online.

So far removed the air scope and the brake duct to see what the effect would be. I found a little droning in 6th gear at 65-70mph, not sure if it wasn't there before. All other droning at lower rpms is gone. Also found it that the auto trans *will* shift to 4th then 5th if you're in manual mode 6th gear at very low rpms and hit the gas.

Hans.

**Rolex** · #42 (**permalink**) 07-22-09, 12:28 PM

Excellent info here. Thanks for sharing your learning experiences with us.

Razorecko · #43 (**permalink**) 07-22-09, 12:52 PM

Hey CadV are you still running that 4" TB ? And the intake maf/ oil issue was that with the K&N in the stock box ?? - I patted the K&N oil filter down on my intake because K&N reallllly over oils all their stuff

CadV · #44 (**permalink**) 07-22-09, 03:35 PM

Quote:

Originally Posted by jwa999

So did you simple clean the MAF sensor?

I bought a new one.

Quote:

I was just looking at ordering the full air intake from Jesse. I guess you have to use your MAF sensor from the stock box. I was going to ask him if he has spare MAF sensors. Couldn't find the acdelco maf part anywhere online.

I got a connection for parts. I can get you one if you want. ACD# 213-4343 and GM# 1393948

CadV · #45 (**permalink**) 07-22-09, 03:50 PM

Quote:

Originally Posted by Razorecko

Hey CadV are you still running that 4" TB ? And the intake maf/ oil issue was that with the K&N in the stock box ?? - I patted the K&N oil filter down on my intake because K&N reallllly over oils all their stuff

No I am not using the 4" because I don't have a non K&N filter. I am not sure which K&N filter caused the issue but it really messed my car up.