Performance Modifications
Custom performance modifications and tuning in Iowa City. Exhaust, intake, turbo upgrades, and ECU tuning for European and American vehicles.
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Service
Performance Modifications
Price
Call for quote
Warranty
Options available — ask us
Turnaround
Same day – 10 business days
Key Takeaways
- ✓ Performance Modifications at Top Gear Auto in Iowa City
- ✓ Pricing: Call for quote
- ✓ Free diagnostic before any work begins
- ✓ European and American vehicles — all makes and models
- ✓ Warranty options available
Performance Modifications & Tuning
Looking to unlock more power from your vehicle? Top Gear Auto offers custom performance modifications for both European and American cars and trucks. From bolt-on upgrades to full forced-induction builds, we turn your vision into reality.
What We Offer
Our performance services cover the full spectrum: cold air intakes, headers, cat-back exhaust systems, turbocharger and supercharger installations, intercooler upgrades, ECU tuning, and suspension improvements. We also handle supporting modifications like fuel system upgrades and upgraded cooling systems to keep everything running reliably at higher power levels.
Built on Experience
With years of hands-on experience working on engines, our team understands what it takes to make real power safely. We’ve built boosted Honda Civics, tuned BMW turbos, and upgraded Ford trucks for towing. We know where the weak points are and how to address them before they become problems.
Performance Done Right
Every modification we install is done with quality parts and proper tuning. We don’t cut corners — every connection is secure, every tune is verified on the road, and every build is designed to be reliable for daily driving, not just dyno numbers.
Start Your Build
Tell us what you’re driving and what you want to achieve. We’ll put together a plan that fits your budget and goals. Call (319) 853-8861 to schedule a free consultation and start your performance build.
Frequently Asked Questions
What performance modifications do you offer?
We offer a wide range including cold air intakes, exhaust systems, turbo and supercharger kits, ECU tuning, suspension upgrades, and forced induction builds. We tailor every build to your goals and budget.
Will performance modifications void my warranty?
Modifications can affect manufacturer warranties depending on the work done. We'll be upfront about what may and may not be covered, and we offer warranty options on our work ranging from 6-month parts-only to 100,000-mile / 3-year full parts and labor.
Related Services
Engine Rebuild
Professional engine rebuild services for European and American vehicles in Iowa City. Expert mechanics restoring engines to like-new condition.
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Engine Swap
Expert engine swap services in Iowa City. We handle everything from sourcing the right motor to final installation for European and American vehicles.
From $2,300
Transmission Swap
Transmission swap and replacement services in Iowa City. Automatic and manual transmission work for European and American vehicles.
Call for quote
Call for a Free Diagnostic
Not sure if you need performance modifications? Call us for a free diagnostic — no obligation, no hidden fees.