Drift Tengoku — September 2004 · Page 42
Page 42 — English translation
The AX75F22 is an excellent match, delivering torque from surprisingly low rpm for a full turbo kit. An FD3S boost upgrade can target 320–370 PS; going further requires a different turbo. R Magic's Ohara stresses that it must suit the rotary engine. Attractive catalog specifications do not guarantee a good match. The shop recommends the external wastegate AX75F2, praising its compatibility and response. This turbo builds...
...boost easily, with power arriving around 4,000 rpm, making it well suited to drifting. At roughly ¥580,000 the kit is expensive, but Ohara considers its rotary compatibility worth the cost. Owners worried about paying for other parts can retain the FD3S's generously sized original injectors if peak output stays around 430 PS.
Only the fuel pump needs upgrading. Efficient power delivery also requires three things: a suitable exhaust, intercooler and ECU. The ECU should be tuned to the individual car rather than using an off the shelf map.
But are the exhaust and intercooler really so important? Ohara says they are: an unsuitable exhaust can easily lose 30 PS...
Captions and page details
By engine
Advice direct from the shops!
Power upgrade guide
13B-REW
Edition
for FD3S
A rotary is an engine that suddenly becomes much more fun with a turbo swap...
...says Ohara of R Magic. Choosing a turbo that matches the engine's character is important.
Simply installing a large turbo is not the answer...
The setup introduced here applies to all FD3S models, from early to late versions.
...so FD3S owners should study the options carefully.
This R Magic demonstration car has a boost upgrade and is ready for a turbo swap. Its injectors, intercooler and exhaust were selected with that upgrade in mind. It only needs the turbo changed and ECU retuned to finish. We feature it as an example of preparing for a turbo upgrade.
A build from R Magic
RX-7(FD3S)
DUNLOP — distinctive, sharp torque is the attraction!
Boost upgraded specification, just before the turbo swap
Power delivered from 4,000 rpm
A rotary engine with a turbo swap
...reveals its true ability!
Choose the exhaust carefully!
...were both priorities in its design!
Sound level and performance
R Magic website
A silencer with internal partitions like this is poorly suited to making power. Even if it is quiet, restricted flow prevents it delivering its full performance...
...that's the problem.
This is R Magic's original Ultra Silent exhaust. Its straight through 80 mm main pipe supports turbo upgraded cars while the article states it meets vehicle inspection standards. FD3S prices: all stainless ¥93,000; semi stainless ¥78,000.
40
...he explains. Appearance and brand appeal are fine considerations, but poor performance can undermine the entire tuning effort. [The quotation continues on the next page.]
...an exhaust with poor internal construction...
About this issue
ドリフト天国 (Drift Tengoku), September 2004, is a Japanese drifting magazine. This archive preserves 316 scanned pages in their original right-to-left reading order, including the covers.
English translations are available through the outlined text areas. Hover over a box on desktop, or tap it on mobile. The original photographs and Japanese lettering remain visible on the scan.
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