---
product_id: 22968940
title: "TBS 10203 TBI power up kit for 1986-95 GM TBI Motors"
brand: "throttle body shop"
price: "678 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Throttle Body Shop"
url: https://www.desertcart.dk/products/22968940-tbs-10203-tbi-power-up-kit-for-1986-95-gm
store_origin: DK
region: Denmark
---

# Up to 40hp boost with power adders 14psi regulator spring for optimized fuel flow Polymer injector spacer, no gasket needed TBS 10203 TBI power up kit for 1986-95 GM TBI Motors

**Brand:** throttle body shop
**Price:** 678 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your GM TBI—Feel the Surge, Own the Streets!

## Quick Answers

- **What is this?** TBS 10203 TBI power up kit for 1986-95 GM TBI Motors by throttle body shop
- **How much does it cost?** 678 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/22968940-tbs-10203-tbi-power-up-kit-for-1986-95-gm)

## Best For

- throttle body shop enthusiasts

## Why This Product

- Trusted throttle body shop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pro-Grade Quality:** Durable polymer spacer resists gas corrosion for long-lasting reliability.
- • **Unlock Hidden Power:** Boost your 1986-95 GM TBI motor by up to 40hp with simple upgrades.
- • **Seamless Installation:** Injector spacer replaces original gasket—no extra parts, no hassle.
- • **Precision Fuel Control:** 14psi regulator spring ensures perfect fuel pressure for peak performance.
- • **Versatile Compatibility:** Fits popular GM models including Silverado, Sierra, Camaro, and more.

## Overview

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 enhance fuel and air delivery, it supports up to a 40hp increase with common power adders and adds 14hp on a stock 5.7L motor. Compatible with multiple GM models, this kit offers a straightforward installation with no gasket required, delivering reliable, long-lasting performance improvements.

## Description

GM TBI power up kit. Includes 1/4" thick injector spacer (design may vary), 14psi regulator spring and instructions on modifying your OEM stock TBI base to add enough fuel and air to support up to a 40hp with power adders such as headers, free flow exhaust intake and small cam upgrades. Adds 14hp on a stock 5.7L TBI motor.

Review: Great quality. - Fits and works just like original.
Review: Very Nice Quality Kit for the Price - Worked Exactly As Expected !!!

## Features

- GM TBI power up kit. Includes impervious to gas polymer injector spacer (design may vary), 14psi regulator spring and instructions on modifying your OEM stock TBI base to add enough fuel and air for up to 40hp gain w/ power adders such as headers, free flow exhaust intake and small cam upgrades. Adds 14hp on a stock 5.7L TBI motor.
- Fits: 1986-95 2.8L 4.3L 5.0L 5.7L TBI motors Silverado Sierra Suburban Yukon Blazer Camaro Firebird Caprice S10 Jimmy. Although this kit will fit 7.4L TBI motors, most came from the factory with a spacer. Please verify before purchase
- The spacer takes the place of your original gasket - no gasket required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LH1ZBC8 |
| Best Sellers Rank | #165,862 in Automotive ( See Top 100 in Automotive ) #101 in Automotive Replacement Fuel Throttle Bodies |
| Brand | Throttle Body Shop |
| Customer Reviews | 4.4 4.4 out of 5 stars (91) |
| 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 |

## Images

![TBS 10203 TBI power up kit for 1986-95 GM TBI Motors - Image 1](https://m.media-amazon.com/images/I/41fZmWNPdbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality.
*by D***S on December 30, 2024*

Fits and works just like original.

### ⭐⭐⭐⭐⭐ Very Nice Quality Kit for the Price
*by B***E on June 10, 2025*

Worked Exactly As Expected !!!

### ⭐⭐⭐⭐ but the transmission went out the day after I installed it so was not able to get a good feel for it
*by C***. on February 11, 2018*

Works well as far as I can tell, but the transmission went out the day after I installed it so was not able to get a good feel for it. Installed easily though.

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**Shop now:** [https://www.desertcart.dk/products/22968940-tbs-10203-tbi-power-up-kit-for-1986-95-gm](https://www.desertcart.dk/products/22968940-tbs-10203-tbi-power-up-kit-for-1986-95-gm)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-26*