Top tuners on east coast
03-23-2014 | 08:17 PM
#41
Staging Lane
Joined: May 2010
Posts: 67
Likes: 2
Not to sound like a broken record, but what may the benefit of an open loop tune be over a closed loop tune?
03-23-2014 | 10:14 PM
#43
The G8 I'm talking about did have a custom grind camshaft and a "CNC valve job." Regardless, it ran much better on the closed loop tune then the open loop tune.
Not to sound like a broken record, but what may the benefit of an open loop tune be over a closed loop tune?
Not to sound like a broken record, but what may the benefit of an open loop tune be over a closed loop tune?
yes i still consider a heads cam setup as simple mods.. Closed loop is pretty much like speed density. It basically doesnt use the 02 sensors.
03-23-2014 | 10:17 PM
#44
Staging Lane
Joined: May 2010
Posts: 67
Likes: 2
03-24-2014 | 08:41 AM
#45
Speed density and open / closed loop are two entirely different things. SD does not use MAF but uses VE constants based on MAP and RPM. You can run speed density in open or closed loop.
SD (no MAF) is usually needed where there are a substantial amount of reversion pulses (turbulence) at the back of the MAF (big cams) which causes false information to be sent to the PCM and fuel corrections are incorrect.
@ Blackdevil: Open or closed loop, SD or MAF based, there is no magic right or wrong formula. It's what makes the car run the best. My race car runs SD open loop but it's a track car and I am willing to make adjustments based on air temp / humidity. I have a 436 CI LS7 here now running SD closed loop since it's a street car. Don't get hung up on the methods. There is a time and place for each. Hope this helps.
Last edited by mikey; 03-25-2014 at 06:46 AM.
03-24-2014 | 10:40 AM
#46
Open loop does not use feedback from the O2 sensors to adjust fueling. It is VE / MAF based. If there is an error in fueling, the PCM will not correct for it. Closed loop uses VE / MAF and takes feedback from the O2 sensors to adjust fueling errors.
Speed density and open / closed loop are two entirely different things. SD does not use MAF but uses VE constants based on MAP and RPM. You can run speed density in open or closed loop.
SD (no MAF) is usually needed where there are a substantial amount of reversion pulses (turbulence) at the back of the MAF (big cams) which causes false information to be sent to the PCM and fuel corrections are incorrect.
@ Blackdevil: Open or closed loop, SD or MAF based, there is no magic right or wrong formula. It's what makes the car run the best. My race car runs SD open loop but it's a track car and I am willing to make adjustments based on air temp / humidity. I have a 436 CI LS7 here now running SD closed loop since it's a street car. Don't get hunt up on the methods. There is a time and place for each. Hope this helps.
Speed density and open / closed loop are two entirely different things. SD does not use MAF but uses VE constants based on MAP and RPM. You can run speed density in open or closed loop.
SD (no MAF) is usually needed where there are a substantial amount of reversion pulses (turbulence) at the back of the MAF (big cams) which causes false information to be sent to the PCM and fuel corrections are incorrect.
@ Blackdevil: Open or closed loop, SD or MAF based, there is no magic right or wrong formula. It's what makes the car run the best. My race car runs SD open loop but it's a track car and I am willing to make adjustments based on air temp / humidity. I have a 436 CI LS7 here now running SD closed loop since it's a street car. Don't get hunt up on the methods. There is a time and place for each. Hope this helps.
**** sorry.... yes open loop... it was late
03-24-2014 | 12:23 PM
#47
Staging Lane
Joined: May 2010
Posts: 67
Likes: 2
@ Blackdevil: Open or closed loop, SD or MAF based, there is no magic right or wrong formula. It's what makes the car run the best. My race car runs SD open loop but it's a track car and I am willing to make adjustments based on air temp / humidity. I have a 436 CI LS7 here now running SD closed loop since it's a street car. Don't get hunt up on the methods. There is a time and place for each. Hope this helps.
03-24-2014 | 12:34 PM
#48
So for a street car that you want to be daily driven, with bolt ons and maybe a mild cam, then a closed loop tune is better? I would want the car tuned as if the car came from GM that way. Kind of like a set it and forget it tune. Not something that has to be tweaked every now and then.
dammmmmmmmmmmmmmmmm 
...
03-24-2014 | 07:30 PM
#51
Mikey pretty much hit it.
A G8 with a mild head/cam should just be closed loop unless the cam is retarded big.
My race car is OLSD too. Tuned it last spring and raced all year with it. Just did the motor and only needed minor changes, will run it like this for the year.LOL It is also used to go to cruise nights. Car makes over 1000rwhp.
A G8 with a mild head/cam should just be closed loop unless the cam is retarded big.
My race car is OLSD too. Tuned it last spring and raced all year with it. Just did the motor and only needed minor changes, will run it like this for the year.LOL It is also used to go to cruise nights. Car makes over 1000rwhp.
03-24-2014 | 10:20 PM
#52
Staging Lane
Joined: May 2010
Posts: 67
Likes: 2
Anybody here familiar with Mongillo Motors in New Haven, CT? Ed Gomez is a very dedicated tuner, I drove a cammed G8 GT he tuned and it drove perfectly. The owner of the G8 went to a couple of different places, including Kaltech to get the car tuned and ended at Mongillo motors. I can't find any information or reviews on them, however.
I'm also looking for somebody. It's between RPM, Tune Time Performance, and ECS right now. Any other tuners recommended?
I'm also looking for somebody. It's between RPM, Tune Time Performance, and ECS right now. Any other tuners recommended?
03-25-2014 | 03:43 PM
#53
Staging Lane
Joined: May 2012
Posts: 57
Likes: 1
From: Massachusetts
So for a street car that you want to be daily driven, with bolt ons and maybe a mild cam, then a closed loop tune is better? I would want the car tuned as if the car came from GM that way. Kind of like a set it and forget it tune. Not something that has to be tweaked every now and then.
03-26-2014 | 09:49 AM
#54
Went up to see...... 
THE FAMOUS-ONE, ABOUT A BIG TURBO,SET UP...
AND A BIG -FRONT,, INTERCOOLER.. SETUP........... DALE CHERRY.....
WILL TUNE THAT BADD BOY,, AND MAKE IT - GROWL-LIKE A GORILLA,,
:drive
..... 
04-03-2014 | 11:43 AM
#57
My T/A is tuned by Tommy (Twisted Minds Racing). It runs great. My 98 vette was tuned by Ron ( 98 T/ADriver) it ran great as well. Both cars were tuned on the street first and then @ the track. They both take there time with the cars and make sure everything is good to go for regular driving and racing. I would say Tommy spent around 6 total hrs tuning my car if not more and Ron around the same with the Vette. Tommy is located by Atco, and Ron in South NJ as well. Fran @ RPM also has done really good work as well on my buddies cars. He takes the time to do it right as well. What I like in a tuner is someone who takes the time to tune your car. Someone who doesnt load a previuos tune on your car and get you in and out in 30 mins. All 3 of these tuners take there time and make sure they are happy with your car before you get it back.
Also in the Hampton roads area I know Ed Hutchinson, and Frost do great work down there as well. Have a bunch of friends who have there tunes on their cars. I was stationed down in Virginia Beach for 9yrs and heard a ton of great things from my friends about those 2 tuners as well.
Also in the Hampton roads area I know Ed Hutchinson, and Frost do great work down there as well. Have a bunch of friends who have there tunes on their cars. I was stationed down in Virginia Beach for 9yrs and heard a ton of great things from my friends about those 2 tuners as well.
