I am considering bt JWT, APS or SSR... Which kit comes with most reliable engine management system?? I am not looking for exteme HP, JUst something reliable for daily driving.

 

not sure about SSR, but JWT and APS don't offer anything for the G yet...

 

ssr offers a kit for the G and it uses the split second box.

 

APS will offer a TT product for the G35 in may 05, should be an excellent system with high torque and a well matched power curve.

Thanks

Peter

 

I think what he was saying was that you guys don't offer a management system with your kit...do ya?

 

I love you Peter. My only decision now is whether to go for max HP with an 8.5:1 CR or shoot for lower HP and a fatter curve with a 9.5:1 CR. There is a 350Z tuned by SGP racing in Houston that made 619whp with 8.5:1, Greddy snails and some tomei cams at 17.5 psi.

Hey Peter, will the APS kit be able to safely huff 17 psi with 8.5 pistons? I seem to remember you saying you would use 9.5 on your own car if you were to build one. Do you think 500whp is attainable safely with 9.5:1 slugs and stock cams? I would like to tune with 91 octane even though 93 is available here. That way I can run 93 all the time and not have to worry about getting a bad tank of gas or not being able to find 93 when I travel. So how about it, is 500whp, 9.5:1CR, 91 octane and stock cams possible with some good old SGP tuning?

Oh and P.S. Please make the kit work with this nice conservative bumper, it's my favorite.

http://www.bulletproofautomotive.com...il.php?ID=1260

 

Oh yeah, back on topic, the SSR kit has the advantage of working with the stock bumper, all others will require the use of an aftermarket bumper which you will need to factor in to the overall price of the mod. I have had a dialogue with Peter from APS and he has hinted that the factory bumper does not provide enough airflow to meet APS's engineering goals. The Greddy kit will not function particularly well with the stock bumper either.

One thing you should be considering when you are looking at these kits is whether or not you are willing to change the look of your vehicle and add the expense of a new bumper. If not you may want to look into some of the SC options. I plan on going APS at all costs, they've got engine management licked with the unichip, not to mention a well thought out fuel system.

 

That couldn't be farther from the truth. The APS kit uses a plug and play engine management system. It is pre-tuned to run on 91 octane with stock compression without any dyno time or user interface other than plugging it in. An added advantage of this system is that the unichip maps are boost referenced and tuned specifically for the injectors included with the kit. This means that you aren't relying on scaling outputs from your MAF sensor and cutting corners to try and make the injectors work smoothly in daily commuting. The unichip system is not a "band-aid" solution like the Greddy. Yes the Greddy system works fairly well but it is not the best solution from an engineering standpoint and isn't exactly plug and play.

 

Not completely true, the JWT doesn't require a bumper change either. It's supposed to be on sale "soon" and will be CARB approved.

 

APS kit is by far the best one there is. I have the PE kit, which is a very good kit... but if I were shopping today for a TT kit, it would be an easy decision.

 

JWT will ship their kits with an ECU reflash. APS comes pre-configured with a plug-n-play Unichip piggyback EM solution, and has a full fuel return system with a rising rate regulator (allowing for a constant differential fuel pressure). PE comes with a full fuel return system as well,but NO EM solution (which is probably ok for the 4.3 psi baseline boost that they have, but certainly NOT a good and/or complete solution as is). SSR uses the SplitSecond box (not plug and play, needs to be hardwired); I am not familiar with their fuel system. Greddy comes with e-manage, but has NO fuel system upgrades. You cannot run the Greddy system safely without a fuel pump, FPR, return-line upgrade (these come standard on the PE and APS kits). All of these kits come with injector upgrades, some better than others. PE uses their own injectors, while APS and SSR use Bosch; all are multiple orifice/correct delta injectors. Greddy uses the much inferior RC injectors, unfortunately,which required you cutting the wire loom (as does the SSR one i believe).

The completeness of the APS kit is what makes it such an attractive solution, not to mention the quality of the components and their superior R&D process. They were not the first to the scene, but they certainly do have the best solution NOW.

Gurgen

 

I'd be looking quite hard at the JWT kit if I were looking for a kit. I'm in CA though and CARB approval would bump it up on my list quite quickly. Of course it needs to be reliable and have decent power too, but not having to worry about any kind of a visual inspection and getting the car smogged would be very nice. My 240sx was actually faster in a straightline than my G is now, but being alomost as fast and legal at the same time alone is worth the extra payment I'm making now. I don't care to have that kind of stress over a car again.

 

According to Sport Compact Car (I think that was the mag), the JWT kit will have a piggyback solution, not an ECU reflash (even though they are known for ECU reflashes). Also, I believe the JWT kit is targeting 400 hp at the crank which translates to about 330 whp. Good for daily driving, but if you're looking for more, you should get the APS (which I believe comes out in May?), but it may not be CARB approved.

 

the APS kit for G will most definately not be CARB approved athe the time of release in ~May. However; like the Z kit ,APS has . will pursue CARB approval. Whether it is obtained is a risk some may need to consider. Peter if you are reading this , I hope you still hold true to earlier committments to seek CARB on both Z and G platforms...

 

the only problem i have is trying to stay patient and wait for the APS kit to be released. i wish it was here already.