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1:
2.5 performance upgrades   (General Fiero Chat - by jediperk, started: 09-26-2014, last post: 2014-09-28 14:35:01 CEST)
So, as posted in the Saw a Fiero today thread, I met a gentlemen who had just purchased and 86 2M4. When talking with him he said he loved the fuel economy, but wished the engine had a little more oomph under spirited driving. We talked about pros and cons of engine swaps and then I mentioned that...
Score: 1000, Size: 33 bytes

2:
I created a new website to aggregate all Duke 2.5 performance data   (General Fiero Chat - by mckaymotoworks, started: 11-07-2014, last post: 2015-02-13 12:21:42 CET)
I have collected quite a few bookmarks, thought it would be handy for anyone else interested in proven modifications for the 2.5L Duke. I have given credit to all the original sources, if you prefer I pull this data down or have any other concerns, please do not hesitate to contact me. Also, to all...
Score: 1000, Size: 81 bytes

3:
My budget performance buildup for the 2.5 Duke   (Technical Discussion & Questions - by Ventura, started: 02-10-2015, last post: 2015-04-12 04:40:27 CEST)
So what exactly is the performance problem with the 2.5 and why do so many people say it's a dog? I've been thinking about that and researching the 2.5 for several years trying to wade through all of the misinformation that's out there.I realized I had to stop thinking about how I would improve on...
Score: 1000, Size: 54 bytes

4:
2.5 performance upgrades?   (Technical Discussion & Questions - by CSM842M4, started: 10-04-2017, last post: 2018-09-08 20:47:02 CEST)
We have been making slow but steady progress towards making my wife's car (1984 base model) more reliable and enjoyable to drive. What I would like to plan ahead for is improving its performance. With about 200K miles on the clock, yes, it burns a little oil. No doubt the bearings are going to...
Score: 1000, Size: 34 bytes

5:
2.5 performance exhuast   (Technical Discussion & Questions - by PRND3L, started: 11-23-2014, last post: 2014-11-29 02:46:34 CET)
Hey guys,I'm running a mild cam (COMP Cam Kit K52-123-4) on my Iron Duke. My car also does not have a cat (previous owner removed it), so I plan on removing all the "extra" piping from the bottom of the header to where it curves down under the cradle. What non-stock mufflers have you 4cyl guys...
Score: 1000, Size: 30 bytes

6:
2.5 intake Manifold performance   (The Mall - by Bongo732, started: 02-22-2016, last post: 2016-02-23 05:33:12 CET)
Hello had some issues with my profile logon, so I had to switch to a new account.Still looking for a 2.5 holley or edelbrock performance intake for TBIIf you have one for sale hit me up my email is charliebongo@gmail.comThanks Charles
Score: 1000, Size: 40 bytes

7:
Holley 2.5 Performance TBI   (The Mall - by Nathan Acree, started: 11-19-2018, last post: 2018-11-25 05:39:51 CET)
Hello,I have a Holley 3739 500.3 TBI for the Iron Duke for sale. I recently bought this on ebay for another project but I won't be using it. It is brand new (but no box).$150 obo shipped.Thanks, Nathan[This message has been edited by Nathan Acree (edited 11-24-2018).]
Score: 1000, Size: 39 bytes

8:
Songs / performances you like, that to you are heartfelt / powerful   (Totally O/T - by 2.5, started: 05-12-2016, last post: 2021-10-05 16:54:44 CEST)
Sometimes its just the lyrics, but sometimes its the lyrics and the composition, or the performance / visual medium.
Score: 1000, Size: 71 bytes

9:
Open filter element on 2.5, will it hurt performance?   (Archive: TD&Q - by Monza76, started: 05-20-2003, last post: 2004-02-23 13:41:29 CET)
I just made a cover for an open filter element from a spare air cleaner housing. My question is simple, will the higher under-hood temperatures reduce performance by much? I like the sound of the unsilenced open filter, and airflow is probably increased, however will the less dense hot air rob...
Score: 1000, Size: 64 bytes

10:
Open filter element on 2.5, will it hurt performance?   (Archive: TD&Q - by Monza76, started: 05-20-2003, last post: 2003-11-10 11:12:51 CET)
I just made a cover for an open filter element from a spare air cleaner housing. My question is simple, will the higher under-hood temperatures reduce performance by much? I like the sound of the unsilenced open filter, and airflow is probably increased, however will the less dense hot air rob...
Score: 1000, Size: 64 bytes



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