Originally Posted by Baddawg1991

93 eg sleeper are you referring to the hytech big tube or the hytech small tube? Because the hytech i have is the small tube. The smsp has about a quarter inch bigger runners. Just seems strange to pair 1-2 and 3-4. At this point any gains i can achieve will get me closer to inchworming my way to 240+

Originally Posted by Baddawg1991

Also i noticed at the track that 4th gear falls hard on its face. Its a jdm full type r 4.7fd trans. Is there any shorter of a 4th gear i can invest in? It falls out of peak power in 4th and you can physically feel the power gain when it climbs back up. I know the biggest issue needed is a larger exhaust, but is this small tube header substantial for a high output 1.8 when the 3" exhaust goes on?

Originally Posted by 93egSLEEPER

I assumed you were talking about a hytech BIG tube header. The SMSP will most likely carry power better since it has larger runners. If it was the hytech big tube, I would say leave it alone. The SMSP tube pairing has proven itself to work out....LOTS of guys ran them and made great numbers.

Lol no that dyno sheet was with the hytech narrowtube and the 2.25 megapower exhaust. I really wish i was closer to the seattle area, so I could toss it on and bingo theres my answer lol. At the track, I had ran my first run with exhaust just to see how it did, (creamed a brand new purple challenger ) and the following run, took the exhaust off, did nothing else and gained 7mph trap speed the very next pass, and noticeable top end difference. So this, combined with the dyno sheet showing a spike in power around 8400, then flat lining proves that its definitely choking with the exhaust setup. I just thought maybe I could get more out of it by swapping the header, so I came here for advice. I REALLY want to see at least 240 out of her when I go back to Rich.

At the end of the day theyre just numbers it all comes down to the track times, AFR's, and how the powerband looks, but when you get great numbers like this its really hard not to try inching just a liiiiiiiiittle more haha
I find it surprising this is the case. You should be shifting right back into the meat of power w/ that trans. What size tires do you have? My R trans on my B20 kills in 4th. Maybe try revving it 2-300 rpm higher and see how that feels.

I find this surprising as well, Im running 195/50/15 street tires and 22x13x9 slicks. Didnt test fit the slicks before we loaded up the car the night before, and found they were rubbing on the caliper bracket, so i never got to run with them. Got the spacers ready for the next set of passes though. I could try revving it higher in third, since i have the capability with hondata, but its already showing a flatline followed by a drop in power around 9200, so i think taking it higher might actually do more harm than good? 4th is my game killer.. 1-3 RIPS, then 4th physically feels flat for the first 5-600 rpm. I think it falls to between 7000 to 7500 after shifting at 9300, does that sound about right similar to yours? BTW I did some reading on your thread. Nice build. All my track time was on the same day you were there (forum fest). It was SO DAMN HOT


It's interesting you made less torque than I did but better peak. Must mean I have more power to go find Could be the port job you have. The powerband on my cams seems much broader and I'm running a larger intake manifold a header on stock ports.

Originally Posted by F22Master

You can put a B16 4th gear in. It is a good bit shorter than the 98-01 ITR 4th gear.

Just some FYI on ratio's

*98-01 JDM ITR 4th & 5th = 94-01 GSR 4th & 5th

*95-97 JDM/All USDM ITR 1st-5th = 94-01 B16 1st-5th

Originally Posted by ojasia

Pro2 cams with 2 & Quarter Exh! I would keep header and install 3" header back, what size collector you running? Pro2's with that Cr. n intake setup is deff'ly trying to breath. You got the Bad*ss Manifold and 74mm TB I'm assuming a good P&P but its narrowing down to a 2.25" Exhaust. The Pro 2's overlap and smaller Header primaries will encourage Velocity (Dont kno how big you went on the P&P) and the 3" will allow more air to get out plain n simple. Of course troubleshooting n time takes money but atleast you have two different headers with two different grouping with two different primary sizings. Sounds like a good start. I would base my Guess on header choice off the bat with how big you went on P&P and if you were able to degree the cams into spec or you had only certain gear settings because of either V2V or P2V. If this were the case I still would of degreed them in accroding to mfg during Spec'ing and found out which way they had to move to become safe. So then you could kno what it was gonna react like ie. you needed to advance intake so it would run safely for clearancing so your power is gonna move to the right, let me try this header first with a 3" exh. n test. If you do enough research n find alot of similar builds you can start finding consistency on a goal. @ some point tho especially with the 92 Oct. your gonna want to come to the realization that thats all you should push it to. You have a VERY linear power curve so how much it helps I'm not sure. Making that power with the exh. you have tho! dam I would just swap the headers n go to your Track. Do a bunch of runs on one header. Swap and do a bunch of runs. Find the consistency and base your decision on which header to possibly upgrade with 3" header back then hopefully your re-tune will allow for greatest outcome.