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⚡ Power up your GM TBI and leave stock in the dust!
The TBS 10203 TBI Power Up Kit is a precision-engineered upgrade for 1986-95 GM TBI motors, featuring a polymer injector spacer and a 14psi regulator spring. Designed to boost fuel and air flow, it supports up to 40hp gains with common power adders and adds 14hp on a stock 5.7L engine. Compatible with multiple GM models, this kit offers an easy, gasket-free installation and is highly rated for quality and performance.
| ASIN | B00LH1ZBC8 |
| Best Sellers Rank | #734,641 in Automotive ( See Top 100 in Automotive ) #881 in Automotive Replacement Fuel Throttle Bodies |
| Brand | Throttle Body Shop |
| Customer Reviews | 4.4 4.4 out of 5 stars (92) |
| Date First Available | July 2, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3 ounces |
| Manufacturer | Throttle Body Shop |
| Manufacturer Part Number | TBS 10203 |
| Package Dimensions | 4 x 4 x 0.75 inches |
D**S
Great quality.
Fits and works just like original.
B**E
Very Nice Quality Kit for the Price
Worked Exactly As Expected !!!
S**L
Just as described
Easy install, results are questionable
B**N
I guess it made a difference
Put this on when doing a crate engine. It seems to be working ok... Time will tell
M**E
Great Product
TBS 10203 TBI power up kit Fit perfectly and it boosted performance on my engine.
K**8
Throttle Body Shop TBS 10203 TBI power up kit for 1986-95 GM TBI Motors
The parts are of good quality and I would advise that if you have not worked on a Throttle Body before you may find this tough. I have work on Throttle Bodies as well as carburetors and this one due to the spring pressure has its difficulty. Once together I bolted it up to my intake and cranked the Truck on the second try. It runs very well and seems to get better with each time I drive the Truck. I can't really say much regarding the horse power increase but i do think that my truck is running better and as well as seems to ideal much smoother.
M**N
Direct fit.
recommends to change membrane aswell and dont forget tbi upper seal also
J**N
Fits perfectly
Definitely more low end power
Trustpilot
3 weeks ago
5 days ago