Q ECU purchase (maybe)
Q ECU purchase (maybe)
Has anyone purchased or know the reputation of this companys ECU upgrades that they do in house? HKL International, Inc. (New Location!)14368 S.W. 142nd AvenueMiami, FL 33186 They gave me a good price on one for my Q45 ($350) and they really seem to konw what they are talking about. They have done some ecu upgrades for other nissan vehicles, I talked to a guy whom has one in his SE-R and he says he loves it, no chec engine lights or anything, they offer a warranty and remove the speedlimiter, and also push the rev limit up. A company can tell you anything but I know you guys will be honest if you have ever dealt with them, Thanks
I don't know why you'd want to purchase an ECU from anyone but Jim Wolfe Technologies. Why take the risk? Jim has done all the work and is recognized as providing an excellant product and service. The product has been extensively tested and proven to work as advertised. I doubt the miami folks are doing their own coding. There is not a huge market for Nissan V-8 reprogramming.
The motor in your Q is very expensive, why try and cheap out on the ECU and risk ruining the motor.
Buy the JWT TCU/ECU combo, it's the best performance product available for the early Q's.
The motor in your Q is very expensive, why try and cheap out on the ECU and risk ruining the motor.
Buy the JWT TCU/ECU combo, it's the best performance product available for the early Q's.
We actually purchased one for the SE-R and the thing works great, no problems and no check engine lights, with my cams and head work I needed some more rpms, they did a nice job the car runs harder than it ever has, however im going to purchase the ECU for the Q from aaacomp and get a stock 93 tcu, I dont like to have the same combo as eveyone else, I like to be different thats why I drive a Q 
It's a toss up as to who wrote the nissan/infinite code JWT or Dianlian (mis spelled) or did they sell to JWT. JWT has great people but there are now groups (like this forum) for Chevy, Ford, Nissan, that do the coding. With guys who have spent yearssss in the assembly language field. The difference b tween a TCS , Active, Std, is 3 lines of code and that's where the rpm, mph, timing, fuel map is located. Later year models have processor upgrades that will give you an engine light because a sensor isn't there, but the same code will work on 90% of the cars with the only problem being the engine light will come on because of a later model sensor not being there or different processor.....(still looking for a supercharger) ........:thumbup
I still just don't understand why anyone would risk such an expensive motor to save a few bucks on the ECU.
It's like filling up with regular instead of premium or buying cheap oil, why risk it.
Everyone who has the ECU/TCU combo raves about it (with the exceptions of a few who think the shifts are harsh) so why not go with a proven product?
I guess it's just a difference in opinion but I just can't even begin to justify it personally.
It's like filling up with regular instead of premium or buying cheap oil, why risk it.
Everyone who has the ECU/TCU combo raves about it (with the exceptions of a few who think the shifts are harsh) so why not go with a proven product?
I guess it's just a difference in opinion but I just can't even begin to justify it personally.
Well the 93 TCU is a proven combo seeing how it is made by INFINITI, and even though YOU might not have ever heard of theme does not mean that they dont know what they are doing, I have personally seen a SKYLINE in Miami that these guys did a ton of work, also im sure that in Japan and other countries some tuners have ECUs for the Q for instance you cant say that IMPUL does not know what they are doing when it comes to ECUs, more and more these days people are writing code that works better than what JWT or G-Force has done but I guess like you said its what you want to do, I my self dont want the Proven combo I want the different combo that works better than the proven combo, if I had of followed the proven combo then my SE-R would not be as fast as it is 14.41 @ 96 mph 240,000 miles JUN cams small block Chevy dual valve springs, AEB 4 into1 header, my own lightend flywheel, and also ported and polished head and no JWT stuff anywhere on the car, this run was done with the stock ECU.I understand that the combo is good but im just saying that somethin could be BETTER.
I'm over in Birmingham, just over the mountain in Hoover.
Be CAREFUL if you're heading down i-20, they've added unmarked cars, multiple troopers and even air patrols between the Georgia Line and Leeds. I-65 is still one huge raceway between Huntsville and Nashville.
Not sure if you've heard, but George Barber has built one hell of a racetrack in Leeds, it's not officially open, but if you get a chance, drop by and check it out. Simply amazing, can't wait to see them get cranked up out there, there's even rumors of F1!
BTW: I'm not saying it can't be done, just that JWT seems to have already done the work and done it well. I think Dennis has a specially modded unit and even he says JWT has managed to get just about everything out of the ECU. I know other people can do the work, I used to use Landshark's (jim Confertini sp?) custom chips in an M3 and the worked better than Dinan's. But in this case the small market of 90-93 nissan V-8's just seems to limit the ability to test and refine, just not enough market.
Be CAREFUL if you're heading down i-20, they've added unmarked cars, multiple troopers and even air patrols between the Georgia Line and Leeds. I-65 is still one huge raceway between Huntsville and Nashville.
Not sure if you've heard, but George Barber has built one hell of a racetrack in Leeds, it's not officially open, but if you get a chance, drop by and check it out. Simply amazing, can't wait to see them get cranked up out there, there's even rumors of F1!
BTW: I'm not saying it can't be done, just that JWT seems to have already done the work and done it well. I think Dennis has a specially modded unit and even he says JWT has managed to get just about everything out of the ECU. I know other people can do the work, I used to use Landshark's (jim Confertini sp?) custom chips in an M3 and the worked better than Dinan's. But in this case the small market of 90-93 nissan V-8's just seems to limit the ability to test and refine, just not enough market.
Ill keep ya posted, the last time I went home I was followed by a HUGE version of Roscoe P Coltrane down I-20 West, this guy followed me for about 10 miles, I slowed down so much that even 18 wheelers were passing us, I got off of the highway and pulled into a gas station to get a MR Pibbs soda pop, when I came out of the station the trooper was across the road waiting for me to leave, well I did not want to be followed any more so I drove over too him ( should have saw his face) and asked him was I headed the correct way for Leeds, at first he looked real pissed, then alll of a sudden he smiled and said brother keep goin the way you were headed and you will run smack into Leeds, he then smiled and said hope you enjoyed are state and make sure you come on back. Now I could not figure out the sudden change in this joker until I realized that I had my CT STATE TROOPER T-shirt on, oh well it was funny and scary at the time. Ill let you know when I come back I would love to meet ya, Im gonna drive the Q the SE-R has already made the trip, got back to Manchester CT from Birmingham in 16 hours 45 minutes, I drove soo much that when I tried to go to bed it felt like I was still doin 100 mph.
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Q45tech
- Moderator
- Posts: 14296
- Joined: Tue Apr 30, 2002 3:19 am
- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
The only way you get more power over factory programming is to lean out the fuel mixture and optimize the ignition timinig!
You will find the mixture overly rich [against a 12.5 AF] something like 10 [or worse] to lower the combustion temperatures.A curve of HP vs fuel mixture will be shallower on the rich side.Extra rich doesn't hurt power as much as extra lean.A curve of HP vs ignition advance is symetrical on either side of optimum.Extra timing doesn't hurt power anymore than less timing [within a few degree range]. [except fot knock]As your rpms exceed the torque peak [4,000 rpm] you need to add advance about 1 degree at 5,000 and 1 degree extra per 500 rpm.....roughly what JWT does [5] vs factory 2 degree total.Since the point of maximum efficiency is 4,000 rpm, the mixture needs to get leaner as the air flow declines [torque declines from the peak] [amount of air filling each cylinder declines as the rpms increase]. The factory holds the mixture the same from 5500 rpm the JWT declines it steadily as the rpms go up by 10% at 6700 and 13% at 7000.
Look for these traits in any ecu you buy, some just change the rev limiter upward and do nothing else [after all that all you can see]!
Only JWT does anything to part throttle operation [tip in ignition retard and desensization of the knock sensor [amount and rpm] to help normal drivability.
The thing I find is moded ecu owners not paying attention to coolant temperature and letting it rise above 194F and losing the benefit of the ignition advance....runs great in winter and slows down greatly in warm weather [more than the normal 1% every 11F warmer.
Never run more than 15.0 Deg BTDC as the knock sensors will activate the retard and remove all your gains.
Oxygenated fuels cause a 5% power loss and poorly blended 91-93 octane don't have enough Motor octane to work well in a high performance high rpm engine especially when the coolant temp [cylinderhead temp] gets above normal 176F.
You will find the mixture overly rich [against a 12.5 AF] something like 10 [or worse] to lower the combustion temperatures.A curve of HP vs fuel mixture will be shallower on the rich side.Extra rich doesn't hurt power as much as extra lean.A curve of HP vs ignition advance is symetrical on either side of optimum.Extra timing doesn't hurt power anymore than less timing [within a few degree range]. [except fot knock]As your rpms exceed the torque peak [4,000 rpm] you need to add advance about 1 degree at 5,000 and 1 degree extra per 500 rpm.....roughly what JWT does [5] vs factory 2 degree total.Since the point of maximum efficiency is 4,000 rpm, the mixture needs to get leaner as the air flow declines [torque declines from the peak] [amount of air filling each cylinder declines as the rpms increase]. The factory holds the mixture the same from 5500 rpm the JWT declines it steadily as the rpms go up by 10% at 6700 and 13% at 7000.
Look for these traits in any ecu you buy, some just change the rev limiter upward and do nothing else [after all that all you can see]!
Only JWT does anything to part throttle operation [tip in ignition retard and desensization of the knock sensor [amount and rpm] to help normal drivability.
The thing I find is moded ecu owners not paying attention to coolant temperature and letting it rise above 194F and losing the benefit of the ignition advance....runs great in winter and slows down greatly in warm weather [more than the normal 1% every 11F warmer.
Never run more than 15.0 Deg BTDC as the knock sensors will activate the retard and remove all your gains.
Oxygenated fuels cause a 5% power loss and poorly blended 91-93 octane don't have enough Motor octane to work well in a high performance high rpm engine especially when the coolant temp [cylinderhead temp] gets above normal 176F.
