How hard is fuel injection?

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Jan 19, 2006 | 11:15 PM

76mike

Thread Starter

Racer

Joined: Nov 2004

Posts: 319

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From: Sunnyvale CA

Fuel injection options?

Considering fuel injection on my L48. How difficult would it be to go down to pick-n-pull and grab the fuel injection components, then install them? I'm kinda tired of 8mpg and not knowing how to tune the q-jet very well. What would I need to get, about how much would it cost, what cars would have the right parts, and how would I install it? (website?)

Thanks guys!

Last edited by 76mike; Jan 19, 2006 at 11:40 PM.

Jan 20, 2006 | 12:48 AM

I'm Batman

Team Owner

Joined: Oct 2004

Posts: 23,831

Likes: 10

From: Springfield MO

St. Jude Donor '07

www.diy-efi.org/gmecm - read the message archives and check out the links. That should give you ideas on how to find other pages to help.

Jan 20, 2006 | 01:17 AM

Kalway

Safety Car

Joined: Dec 2004

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From: San Diego CA

If you do TPI, I hear it runs out of breath around 5k RPMs... Something to consider.

Jan 20, 2006 | 01:34 AM

76mike

Thread Starter

Racer

Joined: Nov 2004

Posts: 319

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From: Sunnyvale CA

Quote:

Originally Posted by Kalway

If you do TPI, I hear it runs out of breath around 5k RPMs... Something to consider.

LOL like I ever get up that high... I don't think that I've ever gotten over 4500. TPI isn't cheap though is it. How much power would I be looking at from say, a stock late 80's early 90's camaro/firebird EFI setup on my L48? Milage? How hard would that be to do?

Jan 20, 2006 | 03:53 AM

breathial

Pro

Joined: Feb 2004

Posts: 564

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From: Pittsburgh PA

From what I've read, not terribly difficult... It seems the toughest part is getting the computer dialed in. I'd recommend looking at MEGASQUIRT. I built the computer already, having to fab a lot of stuff from scratch for my application.... But whether you do a TPI or even a throttle-body injection, the cost will be much lower than a comparable aftermarket kit, you get the ability to tune on-the-fly, and the support is amazing.

Plus, since you live in Sunnyvale, there's enough junkyards around (not to mention Ebay) where you can get the vast majority of parts for CHEAP...

Look forward to hearing what you do, and HOW it goes. If you want, PM me- I have local contacts that might have some goodies to help you.

Eric

Jan 20, 2006 | 06:30 AM

BigBlockk

Drifting

Joined: Sep 2004

Posts: 1,959

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From: North Bend Ohio

It would cost less to get the carb running correctly. If the carb is tuned right and you're still getting 8 MPG fuel injection isn't going to fix it. Get Doug Roe's Qjet book and learn how it works. Get the timing setup right and put a good exhaust on it and it will still cost less in money and aggravation than a fuel injection conversion.

BigBlockk

Later.....

Jan 20, 2006 | 07:52 AM

markdtn

Le Mans Master

Joined: Aug 2003

Posts: 7,720

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From: Chattanooga TN

See this post from yesterday. You can do TPI for under $1000, under $500 if you make the harness and figure out how do burn a PROM.

http://forums.corvetteforum.com/show....php?t=1285774

I have 2 and I like them very well.