facts please. In my 12 years of tuning a ford probe 2.0. This is the craziest thing I thing I have heard about the probe model fs engines.
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in the 12 years you've been tuning your probe, you've been hanging out with FORD guys and on probetalk... sheltered from mazda guys who had extensive knowledge and connections WITH mazda... just because you haven't heard of it, doesn't mean it's not true
you didn't know that forged cranks in FS-DEs do exist until recently, is there anything more I need to say about you being "under a rock"? Don't get me wrong, I'm not blaming you or anyone else for the lack of detailed knowledge... you just weren't exposed to it... ignorance can be forgiven, arrogance can't
Also you say our intake manifolds are restrictive. However from personal experience they are absolutely huge compared to the protege manis, and we don't even have the vics system you guys have packed in there. It's been an ongoing joke with me for years how cute and tiny the protege mani's are... I understand the whole long runner vs short runner thing. However Mazda must have planned on throwing over 60psi of boost at the probe mani's if their size is all in the casting wall thickness. lol
one last thought on the probe specific intake manifold. the 93-94 model FS probes received a different intake mani then the 95+ fsde engines. The 93-94 manifolds are divorced runners which is the biggest visual difference. The manifold on the 95+ fsde probes looks incredibly similar to the 626 manifold that the protege guys switch to for a performance gain.
No one has measured the specs on the probe/mx6 specific intake manifolds. It would be incorrect to state that the probe manifolds are restrictive until facts are backing that statement up.
The fact is that the performance upgrade 626 mani is just an variance of the probe mani. They are both long runner manifold styles with slightly different port dimensions. Then for the protege's, the mani was completely changed to a short runner large port design with internal vics.
I don't want to argue semantics on Mazda's engine specifics. I just needed to clear the air on some statements about the probe specific fs engine which is not all the different at all from the fsde.
PLEASE do NOT turn this thread into a pissing contest about intake manifolds... there's plenty of other threads on this board that had heated "discussions" about non-VICS vs VICS intake manifolds... I'm NOT in the mood to talk about it
this thread is about the heads and heads alone
the fact that you're so skeptical about all that I've said so far tells me a few things which may or may not be true about you since this is the internet and we don't know each other:
-you have an inferiority complex when someone who has a more powerful variant of the same factory engine talks "bad" about your own... all facts, not hearsay mind you
-you are completely skeptic about what I write and disregard the factual information and advice I've given you in the short history you've been here despite the fact that with the knowledge I've shared, the faq I wrote for the past 8 years, and my reputation for having ACCURATE information 99% of the time proves well enough that I don't bulls*** anyone.... the fact that you still call probe engines "FS" and protege engines "FS-DE"s says enough that you don't care what I have to say despite the fact that I already told you that they are
ALL FS-DEs
-you call bulls*** on what you never heard of and call them out just like 5 year old school boys do... "prove it!"
so here is the only thing I'm going to spend my time on to "prove" to you... a scan off of the 2000 626 service highlights manual showing the performance improvements of the 2000+ engines and the differences from the older engines
I also have worked on a lot more mazdas than you have and I've seen the differences myself
there's a lot more I can dig out such as part catalog diagrams/part numbers, more manual pages, etc... but that's a waste of my time, and all that is going to do is humiliate you for not believing me
like I said... I'm NOT in the mood to talk about the intake manifolds nor waste more time over the head differences... so I'm just going to leave it at that before this thread gets any worst because your replies haven't been very nice either and have been provoking