3.7L Tuning Options

16162 Views 38 Replies 14 Participants Last post by 08Canyon, Mar 20, 2015

ColoradoPerfection

Discussion Starter · Jan 11, 2015

Hey guys, I got a 3.7L 5cyl. I'm looking for some performance tuning ideas..So far I have a K&N short ram intake, and a flowmaster super 44 exhaust. I run 20x10" rims in the summers, think the tires are 32" I'm looking for some more power. Any ideas?
Thanks guys, let me know.

1 - 20 of 39 Posts

951colca

· #2 · Jan 11, 2015

I have a Volant CAI, MBRP Catback, and went up to 31" tires on my 2007.
I was wondering the same thing.
I saw a youtube video of some guys doing a hypertech programmer tune in their garage.
I have no clue if that's effective or not, or even what I would want the settings to be.
I did like that they set the top speed limiter to 255MPH lol
The programmer was under $300. If it works I wouldn't be opposed to buying it if others in Southern Cali were willing to chip in on a "tune" if that's even what it does.
Thanks in advance for any input.

FixxxerKH202

· #3 · Jan 11, 2015

Hit up Jeremy @limequat

Here's a link to his site
Services

951colca

· #4 · Jan 11, 2015

wow, that's cheap! I'm not opposed to mailing mine out, since I have another vehicle.
Anyone ever tried this?
Any dyno or seat of the pants results?
I wonder if it's a generic tune, or you give them info and they specifically tune it for your vehicle.
I'll have to call and get some information.
I just sent a pm to another member who got a $300 tune a few years ago in Murrieta, CA.
Still waiting to hear about that.

bk2life

· #5 · Jan 11, 2015

PCM tune is the way to go. it changes trans shifting, timing, fuel maps, in general unleashes some hidden power your motor wants you to have.

FixxxerKH202

· #6 · Jan 11, 2015

Jeremy knows his stuff with these atlas motors. He even provides a loaner if you pay a refundable core charge. He will do whatever you want. Just call and talk to him.

951colca

· #7 · Jan 11, 2015

Those all seem like viable options.
Wish someone had a before and after dyno chart or link to one.
Thanks for the input everyone.

Jesse

· #8 · Jan 11, 2015

If you're in Cali I would send an email out to Blackbear Performance, Justin uses EFI tunes and does a street tune with you. Not sure if he still offers free retunes or not but that's what I have. I've retuned twice with him already, it's well worth the money.

I now have a 3.7 with intake, exhaust, ptb & headers.

1BADI5

· #9 · Jan 11, 2015

Another option and my tuner is @Supermodulation

He can handle anything offer in the 355s. He's done 2 tunes for me thus far and hes finializing my 3rd tune........ 93 tune, all power!

He can do remote tunes, loaners or in person. James has it all covered

951colca

· #10 · Jan 11, 2015

Thanks everyone for the quick replies.
What's the difference between a street tune and a mail your bcm and have it flashed?
Will the new power give me worse mileage? to what degree?
Sorry to ask all these questions, but this tuning thing is foreign to me.
I'm off to read up on torque management for now so as to not make people explain what has already been explained elsewhere.
Search and read, search and read lol

FixxxerKH202

· #11 · Jan 11, 2015

There's not much advantage for a street tune over Jeremy's mail order with your mods, it will just cost you a lot more and almost as much as the tuning software that you could buy and do it yourself. A dyno tune though will allow them to monitor the power output real time so they can tweak variables more to get consistency.

LLV.MA5

· #12 · Jan 11, 2015

951colca said:
Thanks everyone for the quick replies.
What's the difference between a street tune and a mail your bcm and have it flashed?
Will the new power give me worse mileage? to what degree?
Sorry to ask all these questions, but this tuning thing is foreign to me.
I'm off to read up on torque management for now so as to not make people explain what has already been explained elsewhere.
Search and read, search and read lol

You'll end up with better mileage, more power, better shifting, etc.

I can't think of a downside to a good tune.

951colca

· #13 · Jan 11, 2015

I have to apologize to the OP,, I totally jacked the thread, my bad.
So have the tunes been having torque management turned off completely?
Perhaps I could just pay the core and keep my original in case I ever wanted to go back to stock, then again if it gets better mileage and goes faster I will never want to go back to stock.
I looked up the hypertech max power programmer, but it's only for 08-12 Colorados :-(
Again I appreciate the input.

FixxxerKH202

· #14 · Jan 11, 2015

I shut torque management off completely, bumped transmission pressures, adjust shift points to my liking, played with the a/f ratio, and pushed the timing a little.

I have HpTuners, and I think that is the best option if you want to tune yourself. HPT is pricey and takes some learning as well as a wideband o2 to take full advantage.

951colca

· #15 · Jan 11, 2015

With as little as I know about tuning it may be a good idea to have someone else do it for me. I just don't wanna pay someone money and they ask me what I want, I don't like to make decisions like that on the fly.
I know I want to raise top speed.
I guess torque management off. <for faster off the line> so I can grenade my locker lol
Regular 87 octane.
Recalibrate speedo to my 31" tires
Better mileage and more power.
Computer to understand it gets more air flow from intake and exhaust.
I will get the ported throttle body first since I've heard so many testimonials about it.

GregDAP

· #16 · Jan 11, 2015

A real tune would be better than a programmer anyway.

951colca

· #17 · Jan 11, 2015

I think i'm leaning toward Jeremy at limequat, it's not like i'm tuning a Corvette.
$100 seems cheap. Can anyone vouch for this service? Improvements?

GregDAP

· #18 · Jan 12, 2015

http://www.355nation.net/forum/tuning/109705-my-lime-swap-limequat-experience.html

Also SlickSteveo13 on the socal355.com site had his tuned by limequat and had no complaints.

LLV.MA5

· #19 · Jan 12, 2015

951colca said:
I think i'm leaning toward Jeremy at limequat, it's not like i'm tuning a Corvette.
$100 seems cheap. Can anyone vouch for this service? Improvements?

I can.

I had a PCMs For Less tune (cost $200+) and was really unhappy with it. I had told them what I wanted and they didn't listen. My mileage got worse after their tune.

Then I talked to Jeremy at Lime-Swap. He listened and the results were incredible. I gained over 3 MPG right away.

J.Shrubsall

· #20 · Jan 12, 2015

I got my 06 3.5 mail in tuned by Jeremy and I was very happy with the results. I had torque management removed, shift firmness bumped up, passlock disabled as well as some other things. I let him know which mods I had so he could make appropriate adjustments based on what I wanted. The mods I have are ported throttle body, cold air intake and catback dual exhaust. After the tune throttle response was quicker and shifts felt nice and firm. I also gained a couple MPGs which was nice. As far as the process goes it was hassle-free and I was getting this service done from Canada. Jeremy sent me a loaner with the adjustments already made to it. I sent my pcm to him and drove around with the tuned pcm so I could tell him any other adjustments I wanted made. Very stand up guy and will answer any questions you have and explain what he is doing. Definitely recommend his service.

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