[Vwdiesel] % increase from intercooler & straight pipe

James Hansen jhsg at sasktel.net
Tue Apr 7 08:06:36 PDT 2009

Well, just adding an intercooler won't increase power unless unburned fuel
is present (lots of black smoke).  Intercooler makes the air cooler, denser,
and able to burn more fuel if present.  So if you add more fuel, you can get
more power, but just an intercooler by itself won't or shouldn't do much
with the caveat that it is already overfueled.
With intercooler in place, and fuel added, safely increasing power 10% isn't
unreasonable, 20% if you have egt gauges and are careful.
The exhaust response depends on how restrictive the current setup is.  Lots
of times it sounds faster at least.

> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]
> On Behalf Of decker at toledotel.com
> Sent: Tuesday, April 07, 2009 8:41 AM
> To: vwdiesel at vwfans.com
> Subject: [Vwdiesel] % increase from intercooler & straight pipe
> Hi Folks;
>      This is a little off topic for a VW forum.  I have been needing a
> 4
> wheel drive. I got a chance to buy a 1983 Mitsubishi Mighty Max turbo
> diesel
> pickup. It has a 2.3 turbo diesel engine.  I think some of you might
> have
> some idea what percentage of increase in power would likely be obtained
> by
> adding an intercooler and a 2.5 or 3 inch straight pipe etc.
> Brian Decker
> 81 VW Dasher N/A 1.6 diesel 5 spd
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> Vwdiesel at vwfans.com
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