EJ207 Owners?

[v8eaterWRX]

Originally Posted by crazymikie

you need to get a tune to run 93. that's it. then the motor will be fine. you could take your chances and run the stock tune, but i wouldn't do it.....

how about the az/ca guys that only have 91 octane?

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[DoctorNick]

I've run 90 for about 15k on my v7 untuned and ran hard.Never had an issue, the ecu pulled timeing but obviously on topend runs the car wasn't too happy. Ended up paying for an ECUtek tune and detuned the car to 14psi max boost and 245wtq/245whp. ran like a charm for 20-25k more miles before I started to mod the car.

[fastnoypi]

Originally Posted by v8eaterWRX

how about the az/ca guys that only have 91 octane?

A retune is needed for 91 as well, not sure how much timing had to be pulled but i think its a considerable amount.
btw, treefrogaz did a quick roadtune last night on mine, cleared some boost solinoid CELs and got to pass AZ emissions this morning,
now i can re-register!

[crazymikie]

Originally Posted by iNfEk

Mike,

Any update on the logs?

Jon

Here you go- This is 3rd gear (remember this is an RA gearbox, so it's shorter than a USDM 3rd gear but longer than a USDM 2nd- I guess it's like 2.5th gear:P) This is a td06h-20g, 8cm housing, 3" inlet from Deadbolt.

I had to do some scaling to get around the 300 g/sec limit, so the load numbers aren't comparable to anyone running a stock intake. This is running 11:1 across the board and there's still more to be had. I'm hitting 20psi around 4100-4200 rpm in 3rd gear. I have to look at the BCS, though since something isn't quite right.

I think it's a pretty good combo

Time	Manifold Absolute Pressure (psig)	Engine Speed (RPM)	Ignition Timing (°)	Throttle Opening Angle (%)	Air Flow Sensor Voltage (Volts)	Fuel Injection #1 Duty (%)	Knock Correction (°)	Intake VVT Advance Angle Right (°)	Eng. Load - Charge Air Grams (g)
0	10	2508	34.5	11	2.18	6.96	4.5	12	1.03
141	9.9	2513	34.5	11	2.18	6.97	4.5	12	1.03
297	9.9	2552	34.5	11	2.18	7.08	4.5	12	1.03
438	9.9	2549	34.5	11	2.2	7.07	4.5	12	1.03
594	9.9	2583	34.5	11	2.2	7.16	4.5	12	1.03
735	9.9	2585	34.5	11	2.2	7.17	4	12	1.06
875	9.9	2601	34.5	15.7	2.2	7.21	4.5	12	1.06
1032	13.8	2676	33	41.2	2.6	11.42	10	13	1.69
1172	15.8	2650	31.5	72.2	2.6	11.31	10.5	9	1.78
1329	16.1	2707	32	82.7	2.68	12.13	11	14	1.84
1469	16.4	2747	32	100	2.7	12.89	11.5	19	1.91
1641	16.7	2814	31.5	100	2.72	13.81	11	27	1.97
1782	17.1	2885	30.5	100	2.82	14.15	10.5	29	2.03
1922	17.6	2898	30	100	2.86	14.84	10.5	29	2.09
2079	17.8	2965	29.5	100	2.92	15.81	10.5	30	2.16
2219	18.4	3025	29	100	2.92	16.13	9.5	31	2.22
2375	18.9	3080	28	100	2.94	17.08	9	32	2.28
2516	19.3	3131	27	100	2.92	18.7	8.5	33	2.38
2672	19.7	3205	26	100	3.12	19.83	8	35	2.44
2813	20.6	3292	24.5	100	3.04	21.07	7.5	36	2.56
2954	21.3	3377	23.5	100	3.18	22.33	7	37	2.66
3110	22.1	3388	22	100	3.16	23.13	6.5	38	2.75
3266	22.9	3472	21	100	3.26	25.18	6	37	2.91
3407	24.5	3561	19.5	100	3.32	28.11	5.5	36	3.09
3563	25.7	3623	18.5	100	3.38	30.14	5	36	3.31
3704	27.1	3704	17.5	100	3.5	33.18	4.5	35	3.56
3860	28.7	3774	16.5	100	3.64	38.65	4.5	34	3.88
4000	31.6	3958	15.5	100	3.78	43.06	4.5	34	4.16
4157	33.4	4083	14	100	3.82	46.16	4.5	33	4.53
4313	35.4	4185	12	100	4	50.89	4.5	33	4.69
4454	35.7	4300	11.5	100	4.04	55.04	4.5	32	4.63
4610	35.4	4373	11.5	100	4.12	53.18	4.5	31	4.66
4750	35.3	4515	12	100	4.04	52.98	4.5	31	4.72
4922	35.3	4607	12.5	100	4.12	53.07	4.5	30	4.69
5079	35.8	4723	12	100	4.1	60.45	4.5	29	4.66
5235	35.8	4876	12	100	4.16	59.3	4.5	28	4.72
5391	36.1	4983	11.5	100	4.26	64.85	4.5	27	4.81
5547	36.1	5067	11.5	100	4.3	64.86	4.5	26	4.84
5719	36.3	5237	12	100	4.32	68.15	4.5	25	4.81
5860	36.3	5319	12.5	100	4.32	69.22	4.5	24	4.81
6016	36.1	5443	12.5	100	4.38	71.99	4.5	23	4.88
6157	36.3	5482	13	100	4.38	72.51	4.5	22	4.81
6297	36.3	5555	13	100	4.42	73.48	4.5	21	4.84
6454	36.4	5708	13	100	4.44	75.49	4.5	21	4.84
6594	36.1	5832	13	100	4.46	77.14	4.5	19	4.81
6750	36.1	5887	13	100	4.5	77.86	4.5	19	4.81
6907	36.3	6063	13.5	100	4.5	80.19	4.5	18	4.81
7063	36.3	6193	14	100	4.52	81.91	4.5	17	4.81
7235	36.4	6308	16.5	100	4.56	83.43	4.5	15	4.75
7391	36.4	6361	16.5	100	4.56	82.78	4.5	14	4.72
7547	36.4	6449	17	100	4.56	83.92	4.5	14	4.66
7704	36.6	6562	18	100	4.54	83.99	4.5	12	4.56
7860	36.3	6637	19	100	4.56	82.12	4.5	11	4.5
8016	36.3	6793	19.5	100	4.58	84.06	4.5	11	4.44
8157	36.4	6964	21	100	4.56	84.68	4.5	10	4.38
8329	36.4	6970	21	100	4.56	83.27	4.5	9	4.28
8485	36.4	7075	22	100	4.56	83.02	4.5	8	4.25
8641	36.1	7177	22.5	100	4.58	84.21	4.5	7	4.19
8797	36.3	7239	23.5	100	4.58	83.4	4.5	7	4.13
8954	36.1	7360	24	100	4.56	83.22	4.5	5	4.06
9110	36	7492	25	100	4.58	84.71	4.5	5	4.06
9250	36	7500	25	100	4.56	84.8	4.5	4	4
9422	36.1	7661	25.5	100	4.58	86.61	4.5	3	4.06
9579	36.3	7653	25	100	4.6	86.53	4.5	3	4
9735	36.1	7804	25.5	100	4.58	88.24	4.5	3	4
9891	36.3	7862	26	100	4.62	88.89	4.5	3	4
10047	36.3	7953	27	100	4.62	89.92	4.5	3	3.97
10219	36.3	7979	27	100	4.62	88.51	4.5	3	3.94
10375	36.3	8047	27.5	100	4.64	89.27	4.5	3	3.91
10547	36.1	8188	28	100	4.62	90.83	4.5	3	3.91
10688	36.1	8188	28	100	4.66	90.83	4.5	2	3.88
10860	36	8371	28	100	4.64	91.07	4.5	3	3.88
11016	35.8	8417	28.5	55.7	4.66	91.58	4.5	2	3.69
11172	11.5	8224	42.5	0	3.72	31.58	0	3	0.75
11344	6.7	7630	11.5	0	2	0	0	4	0.28
11500	5.8	7082	28	0	2.08	0	0	4	0.34
11657	5.1	6255	28	9.8	2.1	0	0	4	0.53
11813	6.8	6073	40	7.8	2.56	15.55	0	5	0.72
11954	6.2	6163	40.5	9.8	2.54	14.46	0	4	0.69
12110	6.5	6122	40.5	10.2	2.54	14.37	0	4	0.72

Hope that helps!

Mike

[iNfEk]

nice. i'll be looking at this later on. got you back on your pm.

Jon

[eastcoastbumps]

There is a local guy who doesn't post here that runs a stock EJ257 bottom end in his V7 swap and it runs fine on 93 without a tune. Its amazing how flexible the stock ECU is. I'm not recommending this, I'm just saying that it can be done.

[shwoop_soobie]

i ran a ej257 shortblock with vf39, intake/ turbo back, and fmic on STOCK version 6 ej207 ecu. It ran pretty good but lean for sure. nothing to dangerous. it even always started and idled right. i decided to go power fc route

i just found this ej207 thread, and sense i have part of one i thought i would post...
i just got some 1.8 rails and some sti injectors so 300 whp here i come!

[iNfEk]

i want to run upgraded fuel rails... any recommendations? i'm not really a perrin fan

[Hyper]

Originally Posted by eastcoastbumps

There is a local guy who doesn't post here that runs a stock EJ257 bottom end in his V7 swap and it runs fine on 93 without a tune. Its amazing how flexible the stock ECU is. I'm not recommending this, I'm just saying that it can be done.

well, I ran for a year on untouched V9 Spec C ECU, and it wasn't great
yeah, it obviously retarted everything thus keeping the motor from going kaboom! but there's nothing nice about running it @ IAM = 8

[scby rex]

aps, sard but you have to make the lines and get a fp regulator.
I think Im going with the ver8 207 with an avo 450

[AZScoobie]

anyone running a JDM STI engine with a stock ecu is a **** ****. The ECU runs very high timing and runs a lean AFR. The ECU will pull timing but remember this is a cause and effect. You have to knock for the ecu to pull that timing. Once pulled the ECU puts the timing right back and the cycle repeats. This time cycle is set pretty fast on the JDM STI ecu's rom file. Much faster then the US ECUs. If the engine does not blow you are lucky or you had 93 octane. FOr people with 91 octane I would not recomend doing this.

To each your own though!

Clark

[txl146]

hmm.... this thread makes me feel like taking my car to SpecC4u in Canada for a V7Spec C swap. Of course, I got to do it without my wife knowing about it.

[shwoop_soobie]

well,
i just scored some 1.8 fuel rails at the junkyard, and they fit my sti yellowtops, so now i will have some proper fuel. just have to get some o rings and put them on. after that i have to get a proper large housed blow through maf setup, and i should be ready to tune for power.
hopfully 300+ at the wheels.

[iNfEk]

any chances of ones that don't require an AM FPR?

while I've got some peoples attention on this engine... are there any dash bulkhead harnesses that include DCCD that will mate up to a V7 ECU and V7 Engine harness?

Also, Is a V8 ECU have 5 connector plugs or 4 like the USDM?

I want to add a twinscroll turbo kit to my V7 but wondered if the JDM V8 ECU will run my V7 with V8 twinscroll turbo correctly? I know that I've gotta change the oil pan...etc.

Jon

[WRC-boxer]

whats the difference between the V7 and Spec-C V7 and same for V8 vs Spec-C V8
does only the spec-C have twin-scroll?

[GTScoob]

Originally Posted by iNfEk

Also, Is a V8 ECU have 5 connector plugs or 4 like the USDM?
Jon

Same amount of connectors as on my USDM wiring harness. Honestly I wouldnt go for twin-scroll if you've already got a 207, just get an 18G and learn to live without instaboost but with a lot more power on top from 3500rpms to redline.

Twin-scroll is good and great if you want 15psi at 2500rpm but I'd rather have 300whp all the way to redline (or more ). I only put down 270whp with a stock ver8 207, everything stock except for catless downpipe, APS topmount ic, catless dp, and K&N filter. Granted its above 250whp from 5200rpm to redline it just never pulls that much harder.

[nuhga]

jdm ecu also have two step launch control >: )

[Hyper]

Originally Posted by nuhga

jdm ecu also have two step launch control >: )

proof?

[iNfEk]

Originally Posted by GTScoob

Same amount of connectors as on my USDM wiring harness. Honestly I wouldnt go for twin-scroll if you've already got a 207, just get an 18G and learn to live without instaboost but with a lot more power on top from 3500rpms to redline.

Twin-scroll is good and great if you want 15psi at 2500rpm but I'd rather have 300whp all the way to redline (or more ). I only put down 270whp with a stock ver8 207, everything stock except for catless downpipe, APS topmount ic, catless dp, and K&N filter. Granted its above 250whp from 5200rpm to redline it just never pulls that much harder.

thanks... It's been an on going debate between myself for either VF37 (or if i'm able to get one VF36) with twinscroll header/downpipe or a blouche TD05-18G

all things are pointing me towards the 18g though... I'm also probably looking to get 700cc injectors. Which ones should I get and is 700cc to much or to little?

Thanks again,

Jon

[iNfEk]

I do auto-x though so I'd love the instaboost... that is what's keeping me after the twinscroll

[GTScoob]

Are you still running a 4EAT? I might go twin scroll if I was still running a 4EAT, I picked up a bunch of spool time with my old VF29 setup when I swapped to a 5speed, I understand wanting the instant power if you've got the auto. I just think its ridiculous to spend ~$1K for a full twin scroll system to just put down the same numbers you can with a VF30.

[live_2race]

Subscribed

[Kotir]

Originally Posted by AZScoobie

anyone running a JDM STI engine with a stock ecu is a **** ****. The ECU runs very high timing and runs a lean AFR. The ECU will pull timing but remember this is a cause and effect. You have to knock for the ecu to pull that timing. Once pulled the ECU puts the timing right back and the cycle repeats. This time cycle is set pretty fast on the JDM STI ecu's rom file. Much faster then the US ECUs. If the engine does not blow you are lucky or you had 93 octane. FOr people with 91 octane I would not recomend doing this.

To each your own though!

Clark

This is my experience for sure. My standard Ver8 JDM STi Ver8 pinged BAD the one time when I ran out of toluene before a got a reflash. It ran on 92 octane gas after it was bench flashed and 5 degrees of timing was removed (so I could run pump - till I could get it dyno tuned)

It's always boggled my mind that people would send thousands of dollars on a swap and then figure it's fine to run on completely different grade of octane and mixture than it was ever designed to run on. Especially when the USDM STi stock maps don't run that great on 91 octane.

-Tim

[Special]

Nice thread! I run an EJ207 in my S202, and am trying to figure out which is the best bolt on turbo to get. I have all the supporting mods along with an Autronic PnP EMS. I do not want something that will be laggy, but I really want to achieve mid 11's in the 1/4 mile. I have been leaning towards the Blouch Dom III. Any thoughts?

[iNfEk]

Originally Posted by GTScoob

Are you still running a 4EAT? I might go twin scroll if I was still running a 4EAT, I picked up a bunch of spool time with my old VF29 setup when I swapped to a 5speed, I understand wanting the instant power if you've got the auto. I just think its ridiculous to spend ~$1K for a full twin scroll system to just put down the same numbers you can with a VF30.

nope... I'm running a JDM V8 Trans with DCCD (not hooked up though)