Old School EFi

[dave w]

Old School EFi is located in Vancouver Washington.

I custom program performance TBI / TPI chips for Chevy V6 & V8 engines 4.3, 5.0, 5.7, 7.4, 305, 350, 383, 400, & 454 1987 - 1995. I use my laptop computer to read data information from your vehicles computer while being driven, and custom program a performance chip to your vehicle. I also custom program TBI performance chips for Jeep and International TBI conversions.

My chips come with a 30 day customer satisfaction guarantee!

I work by appointment only.

What does a performance chip include? The process includes tuning the vehicle under real world driving conditions. This allows me to adjust the computer's chip programming from normal driving to wide open throttle. In order to optimize the computer's chip programming, the vehicle must be put through driving conditions, something a mail order chip or dynometer can not duplicate!

You can expect: • Increased horsepower • Increased torque • Better throttle response • Increased gas mileage • Overall better drivability

Thanks for taking a look.

[one92rs]

do you do mail order chips?

[dave w]

do you do mail order chips?

Yes, I can do a mail order chips. Please send me a Private Message for more details.

Thanks,
dave w

[dave w]

Attached below are screen shots that show tuning using the computers BLM's and tuning with Wide Band O2 Sensor (WBO2) information.

I recommend tuning with WBO2 for performance engines.

dave w

[Bigdaddykyle]

Are you still active and doing this?

[dave w]

Are you still active and doing this?

Yes, If you are able to data log with TunerPro RT. Send me an IM for additional information.

dave w

[kmac]

Old School EFi is located in Vancouver Washington.

I custom program performance TBI / TPI chips for Chevy V6 & V8 engines 4.3, 5.0, 5.7, 7.4, 305, 350, 383, 400, & 454 1987 - 1995. I use my laptop computer to read data information from your vehicles computer while being driven, and custom program a performance chip to your vehicle. I also custom program TBI performance chips for Jeep and International TBI conversions.

My chips come with a 30 day customer satisfaction guarantee!

I work by appointment only.

What does a performance chip include? The process includes tuning the vehicle under real world driving conditions. This allows me to adjust the computer's chip programming from normal driving to wide open throttle. In order to optimize the computer's chip programming, the vehicle must be put through driving conditions, something a mail order chip or dynometer can not duplicate!

You can expect: • Increased horsepower • Increased torque • Better throttle response • Increased gas mileage • Overall better drivability

Thanks for taking a look.

Hey Dave, how aggressive of an engine will a tbi system handle? I assume there is a limit to how big of cam one can use?

[dave w]

Hey Dave, how aggressive of an engine will a tbi system handle? I assume there is a limit to how big of cam one can use?

I think for a performance engine, 8 injectors for a V8 engine is better than 2 injectors for a V8 engine. Very few of the TBI systems I've tuned has been to the Dyno, but the best Dyno results to date was 335 RWHP. The The Vortec SBC was built with a roller Comp Cams computer friendly cam with .480 / .480 lift, aftermarket Vortec 4 barrel intake using a TBI adapter plate, and 670 CFM throttle body with 80 lb. injectors. The original 1227747 computer was upgraded to the 2nd generation TBI computer 16197427. The 16197427 provides fuel and spark tables to 6000 RPM's. Overall drivability is good.

dave w

[Fast355]

Hey Dave, how aggressive of an engine will a tbi system handle? I assume there is a limit to how big of cam one can use?

I have run a 232/240 @ 0.050 roller on a 108 LSA in an 10.5:1 383 with Vortec heads. 7427 PCM running a TPI with siamese ported SLP runners. Very little difference in tuning that PCM with TBI or MPI.

[dave w]

Using the correct valve spring$ on Vortec Heads when using high lift cam$haft$ is an important topic: https://www.hotrod.com/articles/vort...pring-upgrade/

dave w

[91K2500Beast]

Looking for some guidance. I had a plan but now I am second guessing myself. I have a 91 Chevy K2500 factory 7.4 NV4500 truck. Timing chain broke last year and the truck has unknown mileage so when I dropped it at the machine shop I figured I might as well just rebuild instead of trying to do the bare minimum. As usually happens when ‘it will only cost a little more to XYZ’ is uttered I now have a 489 stroker with Brodix Race Rite 270 heads being assembled and just about ready to go on the dyno. I was hoping to stick with TBI and had mine ported by SPR along with a ported Edelbrock TBI intake. The internal regulator has been deleted in favor of an Aeromotive adjustable regulator, have an Aeromotive in tank 340lph fuel pump to help feed the beast etc. My plan was to go with Dynamic EFI conversion but now I am getting nervous and wondering what limitations I am going to run into and contemplating just tossing a Brawler carb on it so I can get my truck back on the road while I get things sorted. As it might be a factor the cam is a small 218/226@ .050 with .585 lift hydraulic roller. Thoughts?

[dave w]

Looking for some guidance. I had a plan but now I am second guessing myself. I have a 91 Chevy K2500 factory 7.4 NV4500 truck. Timing chain broke last year and the truck has unknown mileage so when I dropped it at the machine shop I figured I might as well just rebuild instead of trying to do the bare minimum. As usually happens when ‘it will only cost a little more to XYZ’ is uttered I now have a 489 stroker with Brodix Race Rite 270 heads being assembled and just about ready to go on the dyno. I was hoping to stick with TBI and had mine ported by SPR along with a ported Edelbrock TBI intake. The internal regulator has been deleted in favor of an Aeromotive adjustable regulator, have an Aeromotive in tank 340lph fuel pump to help feed the beast etc. My plan was to go with Dynamic EFI conversion but now I am getting nervous and wondering what limitations I am going to run into and contemplating just tossing a Brawler carb on it so I can get my truck back on the road while I get things sorted. As it might be a factor the cam is a small 218/226@ .050 with .585 lift hydraulic roller. Thoughts?

The Brawler Carburetor is low cost and simple. A very good option for the budget.

Someone with intermediate to advanced EFI skills will clearly demonstrate how the Brawler Carburetor has earned the nickname "Toilet Bowl"

TBI on a 489 Stroker is a marginal performance plan. In my humble opinion the TBI is a better option than a "Toilet Bowl"

Seeing how you have a manual transmission, I really like the plan to go with Dynamic EFI.

Using Port Injection (one injector per cylinder) is my recommended performance option. Dynamic EFI supports Port Injection too.

The Vortec 454 Port Injection System is an option. The Edelbrock BBC Port Injection System is also an option. Buyer beware of the injectors required for the Edelbrock BBC Port Injection System!

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454 MPFI Engine Stand.jpg


https://www.ebay.com/itm/27643816820...Bk9SR5bsvKf4Yw
454 Port Injection.jpg

[TriumphR3]

http://www.gearhead-efi.com/Fuel-Inj...6&d=1716953302
Impressive little rig. I like the ingenuity.