Fitech 38350 tpi Installed

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Oct 16, 2025 | 06:09 PM

#41

Chumbini

Intermediate

Joined: Oct 2017

Posts: 47

Likes: 18

Quote:

Originally Posted by MReed

You said if you have a large HEI distributor you need to convert to a small cap w separate coil. On the Fitech 8350 description it says "plus the harness plugs into the factory distributor," So, did you have to convert to a small cap?

yes , I obtained a small cap fir a 1989 iroc. It mentions the small cap in the instructions. It wasn’t difficult, I needed to mount the external coil and wiring

Oct 17, 2025 | 03:13 PM

#42

AZSP33D

Drifting

Joined: Jun 2020

Posts: 1,716

Likes: 744

From: Stay dangerous my friends

Idle issues are tricky with new setups, because it's reacting fast with IAC and Timing changes both trying to catch it, often too quick and too sensitive... and if the timing is advanced too much it may be on the downward side of the curve having the opposite effect... You can see this in datalogs. Alternately, lower the base timing tables to say 14 degrees advance for the whole block up to 1300 rpm or so and check with a timing light. If it still doesn't idle it may jump around a lot but if you hold the throttle fairly steady at say 1000rpm you can confirm timing.

Oct 17, 2025 | 04:58 PM

#43

Chumbini

Intermediate

Joined: Oct 2017

Posts: 47

Likes: 18

First TPI installation

Quote:

Originally Posted by D Dubya

Thank you, I just did it myself. It was decent out of the box as self learning, but needed some adjustments after the break in. I plan on a gear and pro charger later this year. If that happens I'll take it in for Dyno tuning.

I also installed a FIRST TPI with my FITECH. I replaced a ported Edelbrock high Flo system. The FIRST feels like a different motor. Tons more torque and it pulls in every gear. It’s still in learning mode and I recently converted to a Zf6 so I’m easy on the clutch . Life run it up to 5600 and backed off . The car is a blast to drive. I’m not sure how much HP it has but I’m shocked when I look down at the speedometer and realize how fast it’s going and how quickly it gets there.

Nov 8, 2025 | 12:24 PM

#44

judy marie

Heel & Toe

Joined: Oct 2024

Posts: 16

Likes: 3

my 1985 corvette help

looking for someone with expeirence installing a fitech 38350

Nov 24, 2025 | 01:24 PM

#45

judy marie

Heel & Toe

Joined: Oct 2024

Posts: 16

Likes: 3

1985 corvette fitech 38350

just finished installing a fitech 38350 fitech on my 1985 corvette so far i am very happy

Nov 25, 2025 | 12:09 PM

#46

Chumbini

Intermediate

Joined: Oct 2017

Posts: 47

Likes: 18

It gets better the more you drive it

Dec 16, 2025 | 11:37 AM

#47

judy marie

Heel & Toe

Joined: Oct 2024

Posts: 16

Likes: 3

Quote:

Originally Posted by judy marie

just finished installing a fitech 38350 fitech on my 1985 corvette so far i am very happy

i had 145 in all 8 cylinders 19 inches vacuum all ign. wires correct timing good nothing wrong with engine did not run right swap over stock 870 ecm to fitech 38350 ecm kit runs great