LET Tune / Dyno and no more throttle closing!!
03-02-2009, 11:51 AM
#1
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
LET Tune / Dyno and no more throttle closing!!
Mods are...
Evosport 175mm pulley
Evosport Phenolic Spacers
80mm TB
K&N filters
Code3 HE
Cm30 pump
Removed secondary cats
the only thing changed between dyno runs was the addition of the LET tune.
ON top of the gains on the dyno, the car feels smoother. Also after installing the 80mm TB i had an issue with partial throttle going into full throttle where the car would buck hard. now that's pretty much all gone, there is only one scenario where i can replicate it yet it's much much less severe then before and may just be the sc engagement.
my car picked up peak 26whp and 9qtq and 43 whp and 35wtq at redline. i need a coolant bleed as the IATs and coolant temps started going up after the 5th run in 30 minutes. which is where wayne stopped doing pulls on it, saying it still has another 15whp in it.
Evosport 175mm pulley
Evosport Phenolic Spacers
80mm TB
K&N filters
Code3 HE
Cm30 pump
Removed secondary cats
the only thing changed between dyno runs was the addition of the LET tune.
ON top of the gains on the dyno, the car feels smoother. Also after installing the 80mm TB i had an issue with partial throttle going into full throttle where the car would buck hard. now that's pretty much all gone, there is only one scenario where i can replicate it yet it's much much less severe then before and may just be the sc engagement.
my car picked up peak 26whp and 9qtq and 43 whp and 35wtq at redline. i need a coolant bleed as the IATs and coolant temps started going up after the 5th run in 30 minutes. which is where wayne stopped doing pulls on it, saying it still has another 15whp in it.
Last edited by prodigymb; 03-02-2009 at 11:56 AM.
03-02-2009, 11:59 AM
#3
MBWorld Fanatic!
I suggest you do that coolant bleed. The system IS very sensitive to this. I Had air pockets on my V12 and it drove like crap!!, lol!..Once took care of it all power was back. Your car is very healthy with those dyno numbers...let me know when you heading to E-town..
03-02-2009, 01:09 PM
#4
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
I suggest you do that coolant bleed. The system IS very sensitive to this. I Had air pockets on my V12 and it drove like crap!!, lol!..Once took care of it all power was back. Your car is very healthy with those dyno numbers...let me know when you heading to E-town..
Yeah as soon as it get a s bit warmer I'll straighten the coolant issue out.
03-02-2009, 06:20 PM
#6
Super Member
Hey Mark, whats going on. It was nice to have met you in person.
I'm a little confused about something.
The numbers at the top of the dyno has your torque at 527.21, yet your torque curve seems to never exceed the 500 mark of the graph.
Why is that?
EDIT: My bad. I enlarged my PC'c font a few days ago and the right hand side of the graph was hidden from me.
I'm a little confused about something.
The numbers at the top of the dyno has your torque at 527.21, yet your torque curve seems to never exceed the 500 mark of the graph.
Why is that?
EDIT: My bad. I enlarged my PC'c font a few days ago and the right hand side of the graph was hidden from me.
Last edited by Tech-Tune; 03-02-2009 at 06:33 PM.
Trending Topics
03-02-2009, 07:33 PM
#10
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
Hey Mark, whats going on. It was nice to have met you in person.
I'm a little confused about something.
The numbers at the top of the dyno has your torque at 527.21, yet your torque curve seems to never exceed the 500 mark of the graph.
Why is that?
EDIT: My bad. I enlarged my PC'c font a few days ago and the right hand side of the graph was hidden from me.
I'm a little confused about something.
The numbers at the top of the dyno has your torque at 527.21, yet your torque curve seems to never exceed the 500 mark of the graph.
Why is that?
EDIT: My bad. I enlarged my PC'c font a few days ago and the right hand side of the graph was hidden from me.
03-02-2009, 07:49 PM
#11
Senior Member
Join Date: Jan 2007
Location: Ft Lauderdale, Florida
Posts: 414
Likes: 0
Received 2 Likes
on
2 Posts
G63, 360CS, CLK63 BS, 997.2TT, 328D
The Tq is on the right side of the graph its the HP on the left side nice numbers now get it bled and get her running as good as she can be. Did he give you any times on bleeding the system other then that little rubber piece you remove to do the basic bleed? I think i need to bleed again myself.
Justin
Justin
03-02-2009, 07:58 PM
#12
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
we tried removing that rubber piece and running the clear hose to the reservoir but the coolant would not go all the way for some reason. maybe my cm30 went bad even though its 3 months old. it was defiently working when we listened it.
03-02-2009, 08:06 PM
#13
Super Member
Unfortunately Wayne forgot to pack a cable he needed to upload my new file, so I'll have to wait to have my LET tune done during their next Tri-state visit.
Wayne did manage a baseline run though. My car dynoed 445rwhp and 428rwtq, which wasn't too shabby for my Lil Ole SL500.
Trying to keep up with you 55K Powerhouses is not an easy task. Your cars are monsters
Wayne did manage a baseline run though. My car dynoed 445rwhp and 428rwtq, which wasn't too shabby for my Lil Ole SL500.
Trying to keep up with you 55K Powerhouses is not an easy task. Your cars are monsters
03-02-2009, 08:57 PM
#15
Newbie
Join Date: Feb 2009
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Saab Viggen, 72 Porsche
Like stated, you are leaving a lot of HP on the table with an a\f ratio like that. Are they measuring out the tail pipe or from a bung? Your a\f should level out at 5500 rpms, in and around 11.5. Is this a mail box tune?
03-02-2009, 09:11 PM
#17
Senior Member
Join Date: Jan 2007
Location: Ft Lauderdale, Florida
Posts: 414
Likes: 0
Received 2 Likes
on
2 Posts
G63, 360CS, CLK63 BS, 997.2TT, 328D
Well i dont think it would go all the way up the tube the tube is just to let the air out then once it isnt then just take it off and plug it. Let me know if you find a better way to bleed it out i guess there is another thing you can remove to do this Jerry told me he was going to send me a picture but i havent got it yet.
Justin
03-02-2009, 09:37 PM
#18
Banned
Join Date: Mar 2009
Posts: 96
Likes: 0
Received 0 Likes
on
0 Posts
e36 325is
Hey what’s up guys? Its Tony here, the guy that was with Wayne this weekend. It was such a pleasure to meet all of you guys.
To explain those AFR's do to the fact that the car was over heating, the ecu will try and compensate for the heat issue by adding fuel to cool things down a bit, the IAT temps was getting hot and its trying to protect itself from thermal overload.
Hope that answered your question.
To explain those AFR's do to the fact that the car was over heating, the ecu will try and compensate for the heat issue by adding fuel to cool things down a bit, the IAT temps was getting hot and its trying to protect itself from thermal overload.
Hope that answered your question.
03-02-2009, 09:56 PM
#19
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
Hey what’s up guys? Its Tony here, the guy that was with Wayne this weekend. It was such a pleasure to meet all of you guys.
To explain those AFR's do to the fact that the car was over heating, the ecu will try and compensate for the heat issue by adding fuel to cool things down a bit, the IAT temps was getting hot and its trying to protect itself from thermal overload.
Hope that answered your question.
To explain those AFR's do to the fact that the car was over heating, the ecu will try and compensate for the heat issue by adding fuel to cool things down a bit, the IAT temps was getting hot and its trying to protect itself from thermal overload.
Hope that answered your question.
03-02-2009, 10:09 PM
#20
Out Of Control!!
03-02-2009, 11:20 PM
#21
Out Of Control!!
Join Date: Sep 2004
Location: San Diego
Posts: 13,394
Likes: 0
Received 4 Likes
on
4 Posts
2015 S212
The top end isn't all that is off. Yes, heat can and does do a similar thing to our cars but those A/Fs are on a steady dump, NOT a spike (which is what the IATs do). Not to start a spat war and glad that OP is happy but I wouldn't write off the drop to heat soak until I had better data. Also, the TQ /HP bands should get kinda squirrly when it is dumping fuel.
Why do both A/F lines look the same? Wouldn't a change in tune show?
Why do both A/F lines look the same? Wouldn't a change in tune show?
03-03-2009, 12:10 AM
#22
The top end isn't all that is off. Yes, heat can and does do a similar thing to our cars but those A/Fs are on a steady dump, NOT a spike (which is what the IATs do). Not to start a spat war and glad that OP is happy but I wouldn't write off the drop to heat soak until I had better data. Also, the TQ /HP bands should get kinda squirrly when it is dumping fuel.
Why do both A/F lines look the same? Wouldn't a change in tune show?
Why do both A/F lines look the same? Wouldn't a change in tune show?
03-03-2009, 10:50 AM
#23
Out Of Control!!
Join Date: Sep 2004
Location: San Diego
Posts: 13,394
Likes: 0
Received 4 Likes
on
4 Posts
2015 S212
I get what you say but I am asking something different. Given that the OP had mods already and that this is a before and after of a tune only, I would have expected differences in the A/F ratios. For example, a flatter line?
03-03-2009, 01:15 PM
#24
MBWorld Fanatic!
Thread Starter
Join Date: Jul 2008
Location: Philly
Posts: 2,171
Likes: 0
Received 3 Likes
on
3 Posts
997TT, R8 V10+, G550, Plaid S
yeah same here. i think he tried changing it but the ecu kept dumping fuel. i am not sure....it would be nice for Wayne to chime as the A/F looks nearly identical.
03-03-2009, 01:39 PM
#25
Former Vendor of MBWorld
Join Date: Jul 2006
Location: In a box
Posts: 2,513
Likes: 0
Received 0 Likes
on
0 Posts
W211 E55
I actually commented on your issue here: https://mbworld.org/forums/3388747-post190.html
prodigymb: I was watching your coolant and IATs spike live during the last run (not shown on graph) - there appears to be a couple of things going on. There is just a bit of belt slip, and the charge coolant circuit is not operating correctly. That was shown during STAR/DAS actuation. I look forward to squeezing quite a few more horses out of her next trip.
