325whp with a 185mm pulley?
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
325whp with a 185mm pulley?
Got my car dyno'd tonight. The best run was the first at 325whp and like 311wtq I think....I will post up the video and dyno sheet when I get it.
Dyno was a Dynojet.
Mods:
185mm pulley
Eurocharged heat exchanger
Eurocharged tune
NeedsWings PSK
NeedsWings IC isolation kit
Full SL55 intake
2ndary cats and resonator delete
My IC pump seemed to cut out on the way home, which could be the problem. But the weird thing is, sometimes on acceleration the supercharger is one but the car is just sluggish and slow in response. I have been having that TB issue up until recently, but is that back now too? The car sounded mean, like it was running good on the dyno but put no power down.
This is my second Johnson CM30 pump, no way this one went bad already...
It also appears my car leans out on the top end.
Any suggestions? I thought for sure I'd be at around 350whp at least.
Dyno was a Dynojet.
Mods:
185mm pulley
Eurocharged heat exchanger
Eurocharged tune
NeedsWings PSK
NeedsWings IC isolation kit
Full SL55 intake
2ndary cats and resonator delete
My IC pump seemed to cut out on the way home, which could be the problem. But the weird thing is, sometimes on acceleration the supercharger is one but the car is just sluggish and slow in response. I have been having that TB issue up until recently, but is that back now too? The car sounded mean, like it was running good on the dyno but put no power down.
This is my second Johnson CM30 pump, no way this one went bad already...
It also appears my car leans out on the top end.
Any suggestions? I thought for sure I'd be at around 350whp at least.
MBWorld Fanatic!
Joined: Jun 2011
Posts: 3,318
Likes: 171
From: Silicon Valley, CA
C63 AMG, P30
Yeah, those numbers do seem quite low. Here's a dyno graph from Eurocharged's website... You should be making more than the claimed 333.9 since you have other mods.
http://www.eurocharged.com/graphs/c3...Tuned_Dyno.jpg
http://www.eurocharged.com/graphs/c3...Tuned_Dyno.jpg
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,510
Likes: 2
From: bay area, california
Aston Martin V8 Vantage
Yeah, those numbers do seem quite low. Here's a dyno graph from Eurocharged's website... You should be making more than the claimed 333.9 since you have other mods.
http://www.eurocharged.com/graphs/c3...Tuned_Dyno.jpg
http://www.eurocharged.com/graphs/c3...Tuned_Dyno.jpg
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
well....i hate to bring up it up, but you need to focus on the actual important numbers:
what was your baseline dyno when stock?
what were your numbers this time (or over previous dynos with different mods)
what were the conditions like this time, and last (and other) time
and was this on the same dyno as before (asuming you did a baseline)?
bottom line is: it's all about the DELTA. not all cars are going to dyno the same, and not all dynos are going to give you the same numbers. it's about the DELTA
what was your baseline dyno when stock?
what were your numbers this time (or over previous dynos with different mods)
what were the conditions like this time, and last (and other) time
and was this on the same dyno as before (asuming you did a baseline)?
bottom line is: it's all about the DELTA. not all cars are going to dyno the same, and not all dynos are going to give you the same numbers. it's about the DELTA
MBWorld Fanatic!
Joined: Mar 2008
Posts: 4,165
Likes: 4
PLAID
well....i hate to bring up it up, but you need to focus on the actual important numbers:
what was your baseline dyno when stock?
what were your numbers this time (or over previous dynos with different mods)
what were the conditions like this time, and last (and other) time
and was this on the same dyno as before (asuming you did a baseline)?
bottom line is: it's all about the DELTA. not all cars are going to dyno the same, and not all dynos are going to give you the same numbers. it's about the DELTA
what was your baseline dyno when stock?
what were your numbers this time (or over previous dynos with different mods)
what were the conditions like this time, and last (and other) time
and was this on the same dyno as before (asuming you did a baseline)?
bottom line is: it's all about the DELTA. not all cars are going to dyno the same, and not all dynos are going to give you the same numbers. it's about the DELTA
Dynos are all different, the real dyno is the qtr mile for me..........
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
Well I did not do a pre-dyno, this was my first dyno with the car. I am waiting for him to email me the graphs, but you'll see a weird spike and the top end A/F ratio...
A 535 dyno'd that night and almost made as much power as my car...there has to be something wrong with it. I think I am in need of a boost gauge to see if it's even making full boost.
A 535 dyno'd that night and almost made as much power as my car...there has to be something wrong with it. I think I am in need of a boost gauge to see if it's even making full boost.
Trending Topics
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
Well I did not do a pre-dyno, this was my first dyno with the car. I am waiting for him to email me the graphs, but you'll see a weird spike and the top end A/F ratio...
A 535 dyno'd that night and almost made as much power as my car...there has to be something wrong with it. I think I am in need of a boost gauge to see if it's even making full boost.
A 535 dyno'd that night and almost made as much power as my car...there has to be something wrong with it. I think I am in need of a boost gauge to see if it's even making full boost.
also, 535's can make plenty of power. they've got the twin turbo six that can be easily modified (same motor as 335/135)
i suppose you can check your boost level....but i really don't know how much that will help if you have an underlying problem
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
Just did a quick test. Codes for pressure sensor, and intake air temp too high check coolant pump.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,510
Likes: 2
From: bay area, california
Aston Martin V8 Vantage
Just did a quick test. Codes for pressure sensor, and intake air temp too high check coolant pump.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
Likes: 0
From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
50k miles each? or for the pair? either way, that's not great longevity... but not awful either. Maybe for the next one, make sure the system is very, very thoroughly bled post-install. I wonder if the IC isolation kit makes this more difficult, to some degree?
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,948
Likes: 3
From: Houston, TX
C32/C55 AMG
I put in a new bosch pump about 50k miles ago and I think it maybe going bad. So the bosch is no better of a pump. I was reading about an updated bosch pump, anyone know anything about it?
MBworld Guru
Joined: Apr 2002
Posts: 22,058
Likes: 18
From: Diamond Bar, CA
W206 PHEV AMG
Just did a quick test. Codes for pressure sensor, and intake air temp too high check coolant pump.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
And it was a new 535, which I was told only has one turbo.
I have gone to the track before but the times weren't good due to wheels spin. I suppose I could go back and see.
my family friend's 135 baseline dyno 265rwhp/283tq and 302rwhp/357tq with tune on dynojet.
keep in mind dynojet is notorious for low numbers.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
Likes: 0
From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
MBWorld Fanatic!
Joined: Jul 2007
Posts: 2,000
Likes: 20
From: East Bay, Bay Area
2002 C32, 2012 S550
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
Yeah, from what the shop owner said their dyno usually reads high if anything...
Verdict: Ordered ANOTHER Johnson pump (This will be my THIRD one), and the B28 Pressure sensor. I am going back with a bag of ice to cool down the intake manifold before the run, and some good shell v-power 91 gas. Costco gas FTL. Also, going to get the OBDII wifi and REv to monitor IAT's, boost, and A/F ratio's.
If it still puts down 325whp then I will accept it. But I am hoping that's not the case.
MBWorld Fanatic!
Joined: Jul 2007
Posts: 2,000
Likes: 20
From: East Bay, Bay Area
2002 C32, 2012 S550
Good luck!
MBworld Guru
Joined: Apr 2002
Posts: 22,058
Likes: 18
From: Diamond Bar, CA
W206 PHEV AMG
personally i think the dynapac is most accurate since it is straight to the hub without wheel & rolling drum difference.
MBWorld Fanatic!
Joined: Jun 2007
Posts: 2,949
Likes: 0
From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
Dynapack does seem to be a good solution, especially for live dyno tuning. That said, I wasn't remarking in any way on what dyno is or isn't the most accurate. I was simply commenting on your observation that Dynojets are "notorious for low numbers" - I've never seen anyone claim that before. That's all; no biggie.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
When I was having TB problems, I got my TB rebuilt. Afterwards, I got a dyno tune and experienced lacking power sometimes still. We sent the TB back and had them re-do it and it's been great ever since. Not saying this is your problem, but sounds similiar to mine.
Good luck!
Good luck!
I suppose I could have a boost leak...is there a way to check?
Senior Member
Joined: Jul 2004
Posts: 468
Likes: 0
From: Salt Lake City
C32, 911 SC
+1
I did a dyno and mine has similar mods to yours, sans SL55 Intake (I have C3 instead). Mine dynoed 285whp and 320tq on a Mustang dyno. The car runs normal to me, but it would be interesting to see if there's a way to check boost leak.
I did a dyno and mine has similar mods to yours, sans SL55 Intake (I have C3 instead). Mine dynoed 285whp and 320tq on a Mustang dyno. The car runs normal to me, but it would be interesting to see if there's a way to check boost leak.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
Posts: 1,660
Likes: 21
From: Orange County
a land yacht.
I guess a way to check it would be by having a boost gauge and seeing if its spiking like it should be. I just ordered the Needswings rubber/cork intake manifold gaskets which should help solve the boost leak issue if there is one.
Super Member
Joined: Jul 2009
Posts: 734
Likes: 27
2021 Yukon XL Denali, 2017 GLS450 4MATIC, 1993 Chevy Corvette
@ the OP, do let us know once you install the new pump and how it turns out. Sounds like you have the coolant split system but do you worry about the Johnson's higher flow damaging the IC? I am about to install the CM30 in my SRT6 and am a bit concerned.
