Like the title says, I'm looking for a place to buy a Dejon or Hahn SMIC -- any leads? I've considered a Supra, but I don't race and would prefer an SMIC that actually fits. Installing the Supra is overkill for me and seems a bit of a mess.

A supra fits.Just flip the tanks or the in and out pipes.Something like that.

I would like one too.A flipped supra fell through on me a month ago.

I've been looking for one for close to a year. Some website called fullboostracing still lists the dejon big smic but its $430 plus their website seems a little sketchy. I emailed them with no response.

You could get a 1g and 2g ic.And make a hybrid, with a tig welder.. that's not a bad idea.

Save some money that way and also have enough Ic in the stock location to be almost rival to the hahn,or supra.

Bud92gsx said:

A supra fits.Just flip the tanks or the in and out pipes.Something like that.

I would like one too.A flipped supra fell through on me a month ago.

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I guess it depends on what you mean by "fits". From reading, the interior-fender upper-frame needs to be beaten inward some, the exit pipe requires a slice be taken out adjacent the OE top opening, and the interior of the fender fascia needs to be trimmed out some, after which it only bulges out a little. It's apparently tricky to mount it high enough for safe clearance between the road and the bottom of the SMIC. For me, "fits" means it's compatible with the car without surgery.

Bud92gsx said:

You could get a 1g and 2g ic.And make a hybrid, with a tig welder.. that's not a bad idea.

Save some money that way and also have enough Ic in the stock location to be almost rival to the hahn,or supra.

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I looked into the possibility of installing a 2G in order to get the larger pipe ID (1G is 1.75", whereas I'd like 2.25"), but the outlet would require significant surgery, probably worse than the Supra. Perhaps if the 1G top tank was installed on the 2G core and the outlet pipe was replaced? But is the 2G core flow/cooling capacity truly better than the 1G?

An associated question is I'm not yet entirely certain the Hahn is a good fit for the 1G, seems unlikely it would fit properly into both 1G and 2G, given their OE SMICs don't.

I picked up a supra smic on the link forums a while back. Someone had already welded on end tanks and a mounting bracket. I havn't gotten around to installing it yet but it looks like it should fit fine.

19BLACKGST98 said:

I picked up a supra smic on the link forums a while back. Someone had already welded on end tanks and a mounting bracket. I havn't gotten around to installing it yet but it looks like it should fit fine.

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Well, I haven't experience myself, but I've read a couple installation threads plus miscellaneous post install comments and although the Supra clearly performs well, install seems to entail some serious work. I'll be interested to learn what you find when you tackle it. That's great the mods are already done though !

I have a Dejon modified 1G smic with 2.25 inlet and outlet welded on. With all hard 2.25" piping and a evo3 and a stock engine i went 12.5 consistently at the track. I have to say heat soak is not that bad 15 runs on a 90* day at 12.6 or lower. I went back in the fall and the car was unchanged from summer and i ran the same times.

TrevorS said:

I guess it depends on what you mean by "fits". From reading, the interior-fender upper-frame needs to be beaten inward some, the exit pipe requires a slice be taken out adjacent the OE top opening, and the interior of the fender fascia needs to be trimmed out some, after which it only bulges out a little. It's apparently tricky to mount it high enough for safe clearance between the road and the bottom of the SMIC. For me, "fits" means it's compatible with the car without surgery.

An associated question is I'm not yet entirely certain the Hahn is a good fit for the 1G, seems unlikely it would fit properly into both 1G and 2G, given their OE SMICs don't.

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Very well researched which is nice to see. You are correct in the clearance between the road and the bottom pipe as well as the fitment issues and "the bulge" the Supra SMIC creates. I can't say for sure on the fitment for the 1g but I can definitely tell you that I have the 2g version of Dejon's big SMIC and fitment is dead-on (same for the Hahn) so I can only assume it's the same on the 1g. I know for a fact that both Dejon/Hahn had specific versions for 1g and 2g as the pipes aren't in the same orientation; one will not fit on the other.

1g Dejon looks like this

2g Dejon/2g Hahn/2g Dejon (another angle)/2g ADFX look like these:


You can tell the upper side of the pipe is more towards the driver side for the 1g as it is for the 2g which is why the 2g fits for the 2g and not for the 1g. You can see they aren't made the same way, although I'm sure you could hack something to make it work. Hope you find one, took me a while to find mine, super happy I did though ---> Quick spool

Forgot to add, the 1g core is bigger than the 2g but the inlet/outlet was bigger on the 2g (so stock for stock, better cooling from the 1g, but better flow from the 2g) http://www.dsmtuners.com/1g_2g_dsm_model_comparison

TurboAnything said:

I have a Dejon modified 1G smic with 2.25 inlet and outlet welded on. With all hard 2.25" piping and a evo3 and a stock engine i went 12.5 consistently at the track. I have to say heat soak is not that bad 15 runs on a 90* day at 12.6 or lower. I went back in the fall and the car was unchanged from summer and i ran the same times.

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4Lurker4 said:

Very well researched which is nice to see. You are correct in the clearance between the road and the bottom pipe as well as the fitment issues and "the bulge" the Supra SMIC creates. I can't say for sure on the fitment for the 1g but I can definitely tell you that I have the 2g version of Dejon's big SMIC and fitment is dead-on (same for the Hahn) so I can only assume it's the same on the 1g. I know for a fact that both Dejon/Hahn had specific versions for 1g and 2g as the pipes aren't in the same orientation; one will not fit on the other.

1g Dejon looks like this

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2g Dejon/2g Hahn/2g Dejon (another angle)/2g ADFX look like these:

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You can tell the upper side of the pipe is more towards the driver side for the 1g as it is for the 2g which is why the 2g fits for the 2g and not for the 1g. You can see they aren't made the same way, although I'm sure you could hack something to make it work. Hope you find one, took me a while to find mine, super happy I did though ---> Quick spool

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Thanks for the help guys ! Glad to learn there are indeed both 1G and 2G versions of the Hahn, that would seem the only sensible explanation. I do like the idea of the Dejon big SMIC and contacted him awhile back regarding availability -- only to learn, of course, he doesn't make them anymore ! Did you guys modify your ducts to better mate with the larger core?

4Lurker4 said:

Forgot to add, the 1g core is bigger than the 2g but the inlet/outlet was bigger on the 2g (so stock for stock, better cooling from the 1g, but better flow from the 2g) Model Guide: 1G vs. 2G Comparison - DSMtuners

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Great! I was thinking about possibly installing 2.25" pipes on my 1G SMIC as a means of increasing air flow. Glad to learn that would at least combine the best attributes of both ! Hopefully I'll yet run across something.

TrevorS said:

Thanks for the help guys ! Glad to learn there are indeed both 1G and 2G versions of the Hahn, that would seem the only sensible explanation. I do like the idea of the Dejon big SMIC and contacted him awhile back regarding availability -- only to learn, of course, he doesn't make them anymore ! Did you guys modify your ducts to better mate with the larger core?

Great! I was thinking about possibly installing 2.25" pipes on my 1G SMIC as a means of increasing air flow. Glad to learn that would at least combine the best attributes of both ! Hopefully I'll yet run across something.

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Yes indeed, making ducting for them is the most important part in getting it to work to it's fullest (well that and cutting the wheel well up for more flow). I'm actually ditching my old one and making a new one out of fiber glass.

TrevorS said:

Great! I was thinking about possibly installing 2.25" pipes on my 1G SMIC as a means of increasing air flow. Glad to learn that would at least combine the best attributes of both ! Hopefully I'll yet run across something.

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You know, staring at the photos of the 1G and 2G SMIC's I could swear the 2G core has one more vertical air duct (15 instead of 14) and the core height is taller. Wonder how the 2G was determined to have a smaller core? Would love to know the core dimensions!

Kinda like the stock 1g and 2g smic's.

I would like more core and more of end tanks.1g/2g hybrid.I should get another 2 smic's, and try that out.

TrevorS said:

You know, staring at the photos of the 1G and 2G SMIC's I could swear the 2G core has one more vertical air duct (15 instead of 14) and the core height is taller. Wonder how the 2G was determined to have a smaller core? Would love to know the core dimensions!

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2g is 7" x 8" x 2.5" for the core only (just measured it for you) The big difference in the cores is the thickness, 1g being thicker.



Here you go for comparison as pictures are worth 1000 words

19BLACKGST98 said:

I picked up a supra smic on the link forums a while back. Someone had already welded on end tanks and a mounting bracket. I havn't gotten around to installing it yet but it looks like it should fit fine.

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When I posted this earlier I ment I dont see there being any problems with my install do to the new endtanks and mounting bracket. I dont want to give off the impression that a stock supra smic would fit correctly or look good. If I thought mine would bulge out the bumper I wouldnt use it.

TrevorS said:

You know, staring at the photos of the 1G and 2G SMIC's I could swear the 2G core has one more vertical air duct (15 instead of 14) and the core height is taller. Wonder how the 2G was determined to have a smaller core? Would love to know the core dimensions!

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From measuring photos, looks to me the 2G core dimensions are roughly 6-3/4"H x 7-1/4"W x 2-1/4" D. 1G core dimensions are roughly 5-5/8"H x 8-3/8"W x 2-1/4"D. So by volume, that would be roughly 110 cu-in 2G and 107 cu-in 1G, pretty much the same, but I'd think the greater height and tube count would help 2G cooling a little, even though surface area appears a wash. However, if my width measurements are near correct, swapping tanks between them could be a problem. Guess I'd just have to get my hands on a 2G and actually measure it.

TrevorS said:

From measuring photos, looks to me the 2G core dimensions are roughly 6-3/4"H x 7-1/4"W x 2-1/4" D. 1G core dimensions are roughly 5-5/8"H x 8-3/8"W x 2-1/4"D. So by volume, that would be roughly 110 cu-in 2G and 107 cu-in 1G, pretty much the same, but I'd think the greater height and tube count would help 2G cooling a little, even though surface area appears a wash. However, if my width measurements are near correct, swapping tanks between them could be a problem. Guess I'd just have to get my hands on a 2G and actually measure it.

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Why would you need to? I measured it for you. If you don't believe me: http://www.dsmtuners.com/forums/newbie-forum/339874-stock-sidemount-intercooler-dimensions.html has around the same dimensions for the 2g core that I do (although believe me thickness is closer to 2.5" than 2.75")

4Lurker4 said:

Why would you need to? I measured it for you. If you don't believe me: http://www.dsmtuners.com/forums/newbie-forum/339874-stock-sidemount-intercooler-dimensions.html has around the same dimensions for the 2g core that I do (although believe me thickness is closer to 2.5" than 2.75")

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Sorry man, didn't mean to disrespect you, at the time I posted that response, I didn't see your reply. Unfortunately, it takes me a little time to formulate a response and that may be beyond the time for another to interpose a reply !

I could open my splash shield yet again and measure my actual 1G SMIC dimensions, but having opened it several times already, I'm a little loath to open it yet again. If you have firm core dimensions for the 2G SMIC, then I'll commit to opening my 1G and measuring the corresponding core dimensions. Have to admit though, I really hate to open it yet again !

No worries, only thing I think you may have gotten wrong (not sure because I don't have one to check) is that the 1g SMIC is about 3 inches thick instead of the 2.5 the 2g has which is why it's core measurements end up being bigger. That's what I got from research on the matter on different dsm sites but like I said, I can't physically check the 1g myself. Just check it when you work on it, it's for your benefit anywho, so do it if/when you can. I just had my old one laying around in the garage reason why it was a quick check for me.

4Lurker4 said:

No worries, only thing I think you may have gotten wrong (not sure because I don't have one to check) is that the 1g SMIC is about 3 inches thick instead of the 2.5 the 2g has which is why it's core measurements end up being bigger. That's what I got from research on the matter on different dsm sites but like I said, I can't physically check the 1g myself. Just check it when you work on it, it's for you're benefit anywho, so do it if/when you can. I just had my old one laying around in the garage reason why it was a quick check for me.

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The photo I used for the 2G thickness was side on, whereas the one for the 1G was at a considerable angle, so it's likely I did underestimate it. Hopefully I'll run across a 1G Hahn or Dejon, definitely my preferred solution.

Search for a 1999-2004 vw golf upgraded side mount. Deminsions are 13.5x8.25x5 it's what I'm gonna run should keep iat's down...oh you'll have to change the outlet to the other side of the tank and the mounting tabs but it's no biggie

TrevorS said:

The photo I used for the 2G thickness was side on, whereas the one for the 1G was at a considerable angle, so it's likely I did underestimate it. Hopefully I'll run across a 1G Hahn or Dejon, definitely my preferred solution.

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Had to pop off the right splash shield and so took measurements.
1G core is 8-1/4"W x 5-3/4"H x 4"D

I have one I'm trying to get rid of, or at least something very similar. I bought it of craigslist a few years back. It has the 2.25 inlet/outlet and bolts right up. It has some messed up fins but holds boost just fine.

Looks like a stock 1g smic to me...

Joshky9 said:

I have one I'm trying to get rid of, or at least something very similar. I bought it of craigslist a few years back. It has the 2.25 inlet/outlet and bolts right up. It has some messed up fins but holds boost just fine.

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i have one i picked up off a parts car round here that looks just like that. came with the dejon UICP's, so i figured it was a dejon. has the 2.25" inlet/outlet as well, and it is most definitely larger than the stock 1g SMIC i pulled out of my car, and as far as i can tell its the stock piece, as everything else from the car was bone stock.

now im wishing i would have grabbed the LICP...

heres a link to my build, the pic is the 9th one down. looks identical to yours josh.