Disappointing results
Thread Starter
Launching!
Joined: Feb 2005
Posts: 296
Likes: 0
From: Schaumburg
Disappointing results Heres the background information:
Bought the A4 2002 z28 six months ago with only 7300 miles. It was completely stock.
I added a Magnaflow cat-back, SLP air lid, smooth bellows & air filter. There is now < 13,000 miles on the car.
Yesterday a local shop added a torque converter, shift kit and trans cooler. Then it was tuned and dyno tested. The results were 303 hp
.
Does this seem right
. If so then stock hp must have been around 260 ish 
.
Bought the A4 2002 z28 six months ago with only 7300 miles. It was completely stock.
I added a Magnaflow cat-back, SLP air lid, smooth bellows & air filter. There is now < 13,000 miles on the car.
Yesterday a local shop added a torque converter, shift kit and trans cooler. Then it was tuned and dyno tested. The results were 303 hp
.Does this seem right
. If so then stock hp must have been around 260 ish . Stock A4 was ~290ish rwhp. 10rwhp gain is about right for those mods. Don't believe everything you read about gains. It does not work like that.
I lost 10rwhp going from an SLP SS exhaust to the Magnaflow. Gained 2rwhp from the lid. 0 from the K&N. I dyno'd on the same dyno before and after every mod.
I lost 10rwhp going from an SLP SS exhaust to the Magnaflow. Gained 2rwhp from the lid. 0 from the K&N. I dyno'd on the same dyno before and after every mod.
Thread Starter
Launching!
Joined: Feb 2005
Posts: 296
Likes: 0
From: Schaumburg
Originally Posted by davered00ss
Stock A4 was ~290ish rwhp. 10rwhp gain is about right for those mods. Don't believe everything you read about gains. It does not work like that.
I lost 10rwhp going from an SLP SS exhaust to the Magnaflow. Gained 2rwhp from the lid. 0 from the K&N. I dyno'd on the same dyno before and after every mod.
I lost 10rwhp going from an SLP SS exhaust to the Magnaflow. Gained 2rwhp from the lid. 0 from the K&N. I dyno'd on the same dyno before and after every mod.
im assuming 303rw locked?
the $150 pcm reprogram isnt really a full tune but as they said dont worry so much bout the numbers. Just take it to the track and get some slips and tell us what ya get! i bet 12s as well w/ some DRs and a good launch
also just to put it in perspective my 98TA A4 w/ full bolt-ons except for ls6intake did 326rw locked so 303rw w/ a few mods aint bad at all
the $150 pcm reprogram isnt really a full tune but as they said dont worry so much bout the numbers. Just take it to the track and get some slips and tell us what ya get! i bet 12s as well w/ some DRs and a good launch
also just to put it in perspective my 98TA A4 w/ full bolt-ons except for ls6intake did 326rw locked so 303rw w/ a few mods aint bad at all
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my buddys 2000 trans am auto with lid and borla exhaust dynoed very similar...not really that bad for an auto...put some 3.42s or 3.73s in it and youll be close to 12s, if not there 
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Administrator
Joined: Jan 2002
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From: Earth
I'm not sure what converter you've got, but if it's at least a 3500 stall...pick up some nittos or better and consider yourself a mid 12 second car. Don't get caught up in the dyno numbers. Take it to the track.
TECH Junkie
Joined: May 2003
Posts: 3,050
Likes: 0
From: its fucking cold
Originally Posted by unit213
I'm not sure what converter you've got, but if it's at least a 3500 stall...pick up some nittos or better and consider yourself a mid 12 second car. Don't get caught up in the dyno numbers. Take it to the track.
. 
Ok I will chime in here for you.
Here is my list of modifications to a 2001 Camaro SS with 45,000K
Freebie mod's
K&N FIPK CAI
160 TSTAT
Mac Midlength Headers
Mac ORYPIPE
Random Tech High Flow Cats
SLP Loud Mouth (at the time of dyno)
Yank SS3600 SS converter
Trans Go Shift Kit
Dynotune prior to this dyno
Trans cooler
Ok ready? Previously dynoed without the trans work.. 344.5 rwhp and 357 rwtq
with the trans work? 309 rwhp
Make sure they LOCK your converter on the dyno to see the optimum numbers so you can see if your mod's are dead on or not.
I lost close to 30 rwhp due to my converter not being locked on the dyno.
I also had a 150 shot wet go through and posted up 473RWHP unlocked converter.
SO dont frett, you have an unlocked converter, hence the small numbers.
By the way.. 12.3 I run with a **** short time of 1.70 on et streets with the 309 horse..
not to bad right?
I better 60 foot her.. 12.1's all day long.
Here is my list of modifications to a 2001 Camaro SS with 45,000K
Freebie mod's
K&N FIPK CAI
160 TSTAT
Mac Midlength Headers
Mac ORYPIPE
Random Tech High Flow Cats
SLP Loud Mouth (at the time of dyno)
Yank SS3600 SS converter
Trans Go Shift Kit
Dynotune prior to this dyno
Trans cooler
Ok ready? Previously dynoed without the trans work.. 344.5 rwhp and 357 rwtq
with the trans work? 309 rwhp
Make sure they LOCK your converter on the dyno to see the optimum numbers so you can see if your mod's are dead on or not.
I lost close to 30 rwhp due to my converter not being locked on the dyno.
I also had a 150 shot wet go through and posted up 473RWHP unlocked converter.
SO dont frett, you have an unlocked converter, hence the small numbers.
By the way.. 12.3 I run with a **** short time of 1.70 on et streets with the 309 horse..
not to bad right?
I better 60 foot her.. 12.1's all day long.
Originally Posted by dsz28
Heres the background information:
Bought the A4 2002 z28 six months ago with only 7300 miles. It was completely stock.
I added a Magnaflow cat-back, SLP air lid, smooth bellows & air filter. There is now < 13,000 miles on the car.
Yesterday a local shop added a torque converter, shift kit and trans cooler. Then it was tuned and dyno tested. The results were 303 hp .
Does this seem right . If so then stock hp must have been around 260 ish .
Bought the A4 2002 z28 six months ago with only 7300 miles. It was completely stock.
I added a Magnaflow cat-back, SLP air lid, smooth bellows & air filter. There is now < 13,000 miles on the car.
Yesterday a local shop added a torque converter, shift kit and trans cooler. Then it was tuned and dyno tested. The results were 303 hp
.Does this seem right
. If so then stock hp must have been around 260 ish .
aftermarket converters eat up Hp on dyno's unlocked, but it will be faster at the track with a sticky tire 
because of the 4400 high stall. 
Originally Posted by Wyckedcamaro
Make sure they LOCK your converter on the dyno to see the optimum numbers so you can see if your mod's are dead on or not.
I lost close to 30 rwhp due to my converter not being locked on the dyno.
I lost close to 30 rwhp due to my converter not being locked on the dyno.
TECH Junkie
Joined: May 2003
Posts: 3,050
Likes: 0
From: its fucking cold
Originally Posted by Wyckedcamaro
Make sure they LOCK your converter on the dyno to see the optimum numbers so you can see if your mod's are dead on or not.
To summarize....dyno numbers don't mean ****.
your right.. dyno's dont mean ****. But if you are gonna be upset over your numbers.. then ask them to lock your converter so you can be HAPPY.
Dyno numbers are JUST bragging rights. Thats all.
And I had my converter locked on the dyno tune and then we switched over to a yank ss3600 and unlocked and I dynoed significantly less.
But I ran MUCH better..
Dyno numbers are JUST bragging rights. Thats all.
And I had my converter locked on the dyno tune and then we switched over to a yank ss3600 and unlocked and I dynoed significantly less.
But I ran MUCH better..
Originally Posted by DrkPhx
Was your converter locked or unlocked on the "before" dyno number? You need a true apples to apples comparison. Losing that much power from a Yank SS converter that is supposed to be very efficient is not right. I saw a difference of 18 rwhp between locked and unlocked on my TCI 3800 and I thought that was a lot but calculated about 96% efficiency.
Before the cam, I pulled 318 unlocked with stock converter and run a 13.80 et (Thats good for our 10 million mile high track). Put the converter in and then dynoed 306 unlocked and ran a 13.30 at the same track.
Puling 472 unlocked with the 100 shot. Can not wait to see what this does!!!