Power gain calculator:

Play with your Modifications for the Renault 21 options below and see which mods give you the best power gain.

Click here
if you want to calculate your 1/4 mile times from the bhp.

Modifications for the Renault 21

21 tuning tips from the car tuning guide, we take a look at the best power mods for the 21 in our latest guide.

Available in standard form with power of upto 175bhp (depending on the year), so this goes to show the tuning potential of the 21. From this you can increase the power from anywhere between 192.5bhp to 297.5bhp with modifications varying from a few DIY mods to some pretty major engine work. The higher you go the more unreliable the car will be and you should expect to have to rebuild the engine regularly if you want to extract silly power. A big forced induction upgrade would be needed to push beyond the 100bhp per 1000cc limit.

If you have a lower powered 21 your best bet for a mod would be an engine swap with the 175bhp 21 Saloon. The already BHP endowed range of 21s reward tuners with a satisfying power gain. The most frequent modification we see on the 21 include sports exhausts, air intakes or induction kits and a fuel pressure boost valve.

The modification that gives the biggest power gain on your car would be a fast road cam. Turn your attention next to the 21s engine head. With a good gas flowed ported engine you will see much better mid and peak range power.

The most powerful 21 Saloon in our database offers 175 bhp. From this you can increase the power from anywhere between 192.5 bhp to 297.5bhp with mods we have outlined above.

You will get even larger power gains for these tuning mods on a 21s. A simple remap and better intercooler will almost double your power.The 21s come in various power levels right up to 175bhp. On a motorsport prepared 21 it is possible to achieve power figures of anywhere approaching 227.5bhp to 332.5bhp. But this sort of power requires some pretty heavy investment and a hell of a lot of engine work. . The 21s handling can be dramatically improved with some choice suspension modifications. A drop of 35mm will work well on most cars, any lower and you will hit other problems.

We will have more detailed 21 modification guides in the near future. Please check the site regularly for updates.

These sites provide useful further reference on the mods we have recommended:
Car Tuning – TorqueCars cover just about everything on car tuning and car mods.
Car Styling A photo blog with pictures of inspirational show cars.

This entry was posted in 21. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *