Harris Performance TBI chip... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

H8PVMNT · 09-06-2011, 03:04 PM

Just installed the Harris Performance Inc Towmaster chip in my '88 1 ton crew cab and took a 500 mile tow/road trip to pick up a milk cow (banjos playing in background).

These things really work! Throttle response and acceleration was much improved as well as a noticable difference in power wile pulling hills. Milage was the same as before at around 10 mpg. I haven't got to drive with it much unloaded since putting in the chip. I was getting 10 mpg loaded, unloaded towing etc. so I'm guessing this will be the same.

It also idles much smoother than before.

It's nice to have a 5 minute install make a noticable difference.

franky69c10 · 09-06-2011, 06:30 PM

When putting in the new chip do u have 2 reset the timing and how much did it run u ?
Posted via Mobile Device

meter swinger · 09-06-2011, 07:05 PM

i'm all ears, i need to do this on my 88 1ton.

thirdstreettito · 09-06-2011, 07:33 PM

Brian is a genius! His stuff is the bomb! He'll be making me a custom chip when I put the Vortec 383 into my 88 burb. I'd never buy from someone else.

H8PVMNT · 09-07-2011, 08:25 PM

The chip was $130 to my door.

The timing is set to factory specs and you are suposed to run 91 octane or if you switch to a 180 thermostat you can run 87. Honestly though I had both tanks full of 87 when I installed it and the truck ran just fine anyway. No noticable pinging or anything like that... Might have to do with the elevation here. I ran 91 since then and I have a 180 thermostat sitting on the seat waiting to be installed.

Since I posted I ran to town unloaded and all over town and I think I picked up a mile per gallon there.

camshaftgsxr · 09-07-2011, 08:27 PM

how does this compare to a performance carburator?

H8PVMNT · 09-07-2011, 08:31 PM

I don't know since I've never ran a 454 with a carb. I'm sure you could get more kick out of a carb setup in general since you can simply throw more fuel in there with a good carb, but for guys with TBI who want to run TBI but juice it up a little I think it's a viable upgrade comparing the stock chip to this one.

SCOTI · 09-07-2011, 08:41 PM

Contact link? Did you have to do any other adjustments (bump fuel psi etc....)?

I'm still working on getting my 461 back into the bay. I went w/flat-tops, a Mellings towing/RV cam, Edelbrock TBI intake, ditched the air pump set-up, & added 1.75" x 3" collector long tube headers. Sounds like one of his chips would serve me well....

thirdstreettito · 09-07-2011, 10:19 PM

http://www.tbichips.com/

He is a helluva guy. Real smart, he and I planned out everything for my Vortec 383 for my 88 burb.

SCOTI · 09-07-2011, 10:26 PM

Ahhh.... I didn't realize it earlier but that's who I was already considering.

H8PVMNT · 09-11-2011, 11:26 PM

100% sure now I'm definately getting better milage than before. Still haven't ran any numbers but it takes about 1/8th less fuel to drive to town and back now.

Hoods69BadBowTie · 09-12-2011, 01:41 AM

Awesome I might have to check his stuff out. Thanks for posting feedback and getting a link up its much appreciated

09-06-2011, 03:04 PM	#1
H8PVMNT Registered User Join Date: Aug 2011 Location: Highwood, MT Posts: 24	Harris Performance TBI chip... Just installed the Harris Performance Inc Towmaster chip in my '88 1 ton crew cab and took a 500 mile tow/road trip to pick up a milk cow (banjos playing in background). These things really work! Throttle response and acceleration was much improved as well as a noticable difference in power wile pulling hills. Milage was the same as before at around 10 mpg. I haven't got to drive with it much unloaded since putting in the chip. I was getting 10 mpg loaded, unloaded towing etc. so I'm guessing this will be the same. It also idles much smoother than before. It's nice to have a 5 minute install make a noticable difference.

09-06-2011, 06:30 PM	#2
franky69c10 chevy runs deep Join Date: Mar 2006 Location: PHOENIX AZ Posts: 1,074	Re: Harris Performance TBI chip... When putting in the new chip do u have 2 reset the timing and how much did it run u ? Posted via Mobile Device __________________ RAIDER NATION 1969 c10 swb soon 2 b on the road... My LWB is a SWB now http://67-72chevytrucks.com/vboard/s...d.php?t=498241

09-06-2011, 07:05 PM	#3
meter swinger Registered User Join Date: Apr 2009 Location: Kennewick WA. Posts: 1,437	Re: Harris Performance TBI chip... i'm all ears, i need to do this on my 88 1ton.

09-06-2011, 07:33 PM	#4
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: Harris Performance TBI chip... Brian is a genius! His stuff is the bomb! He'll be making me a custom chip when I put the Vortec 383 into my 88 burb. I'd never buy from someone else. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

09-07-2011, 08:25 PM	#5
H8PVMNT Registered User Join Date: Aug 2011 Location: Highwood, MT Posts: 24	Re: Harris Performance TBI chip... The chip was $130 to my door. The timing is set to factory specs and you are suposed to run 91 octane or if you switch to a 180 thermostat you can run 87. Honestly though I had both tanks full of 87 when I installed it and the truck ran just fine anyway. No noticable pinging or anything like that... Might have to do with the elevation here. I ran 91 since then and I have a 180 thermostat sitting on the seat waiting to be installed. Since I posted I ran to town unloaded and all over town and I think I picked up a mile per gallon there. Last edited by H8PVMNT; 09-07-2011 at 08:32 PM.

09-07-2011, 08:27 PM	#6
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	Re: Harris Performance TBI chip... how does this compare to a performance carburator? __________________

09-07-2011, 08:31 PM	#7
H8PVMNT Registered User Join Date: Aug 2011 Location: Highwood, MT Posts: 24	Re: Harris Performance TBI chip... I don't know since I've never ran a 454 with a carb. I'm sure you could get more kick out of a carb setup in general since you can simply throw more fuel in there with a good carb, but for guys with TBI who want to run TBI but juice it up a little I think it's a viable upgrade comparing the stock chip to this one.

09-07-2011, 08:41 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,066	Re: Harris Performance TBI chip... Contact link? Did you have to do any other adjustments (bump fuel psi etc....)? I'm still working on getting my 461 back into the bay. I went w/flat-tops, a Mellings towing/RV cam, Edelbrock TBI intake, ditched the air pump set-up, & added 1.75" x 3" collector long tube headers. Sounds like one of his chips would serve me well.... __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

09-07-2011, 10:19 PM	#9
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: Harris Performance TBI chip... http://www.tbichips.com/ He is a helluva guy. Real smart, he and I planned out everything for my Vortec 383 for my 88 burb. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

09-07-2011, 10:26 PM	#10
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,066	Re: Harris Performance TBI chip... Ahhh.... I didn't realize it earlier but that's who I was already considering. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

09-11-2011, 11:26 PM	#11
H8PVMNT Registered User Join Date: Aug 2011 Location: Highwood, MT Posts: 24	Re: Harris Performance TBI chip... 100% sure now I'm definately getting better milage than before. Still haven't ran any numbers but it takes about 1/8th less fuel to drive to town and back now.

09-12-2011, 01:41 AM	#12
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: Harris Performance TBI chip... Awesome I might have to check his stuff out. Thanks for posting feedback and getting a link up its much appreciated __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!



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