So over the past 2 months I decided to just throw some money at the car and now thinking I may need to upgrade the fueling.

I recently got a Eurocharged S/C pulley, ECU, and TCU tune. Which in the first place is great but I wanted more..

Just loved the look of the dcai and the big intake manifolds from Needswings... So I ordered those. And Some catless cut out down pipes...
(Waiting for those to be shipped)

Now my concern is once installed if that is enough to need a boost in the fueling system?

I know I would need it if I stacked a 178 with the S/C pulley.. which may be what happens in the end. But I feel I have spent enough so far.

Already taking it to Eurocharged to get retuned once I get the parts installed.

Any advice is great!

 

I would suggest you add the SL55 fuel pump and AEM regulator from Rob, especially if you may add the 178 pulley. That will get you into some pretty fast company.

 

Is the sl55 fuel pump better than the Walboro 255? The cost difference is the cost of the aem regulator.

Just trying to understand better

 

EC can add enough fuel with the tune for your mods, stock injectors / fuel pump. I have the Pierburg fuel pump on my car now. I didn't have lean issues with the stock fuel system until I tried stacking the 178 and 65mm pulleys. When stacked the better pump helps a lot but still gets a bit lean up top. Disclaimer, on my car with my mods, natch.

Les

 

Well that is a relief for the time being. Yeah once these parts are installed I want to wait and get used to the feel of them before doing the 178 pulley and upgrading the fuel.

Thanks for the help!

Also, you said you tried stacking? Did you not like the feel of it or was it tough to get it running right? Would new injectors with that fuel pump help with that leaning out?

 

I only ran about 24 hours in all stacked. The power at low rpms was blinding. After watching my AFR on the gauge I became concerned. Not so much at WOT but at part throttle with lots of boost the AFR's were still around 14.7. At the drag strip I ran the same times as with just the 178 pulley. The car pulled hard down low and the power trailed off near redline. I didn't want the problems of tuning for the injectors that you need to run stacked safely. In other words a tune modified from idle to redline, part throttle, actually all conditions. Now that the tuners have done a few of our cars it's less of a worry.
If I was looking for 1/4 mile results I'd run stacked with 550cc injectors or nitrous. Grip Grip, for one, had both successfully.

Les

 

In my humble opinion (and I've been there / done that) . . . Unless your mission is going to the drag strip chasing 10ths of a second on your time slips, I would stick with the performance improvements you'll gain with a 65mm supercharger pulley along with those other mods you outlined.

Going stacked or with a 62mm supercharger pulley, either of which WILL require upgrades to the fuel system (many who have tried it still can't get it quite right) is just not worth the additional effort and expense. As you may know, I have two SRT6 roadsters. One has the Needswings DCAI, a 62mm supercharger pulley, upgraded fuel pump and fuel pressure regulator, Needswings catless downpipes and a Eurocharged tune. The other has the Needswings DCAI, a 65mm supercharger pulley and a Eurocharged tune. Both cars are very fast and fun to drive. Frankly I would have trouble detecting a "seat of the pants" difference in the acceleration between the two cars. One of these days, I'll have my son hop in one and get in a few side by side runs.

Just sayin' . . .

 

If you decide to go this route, forget the Walbro pump. Just order the upgraded fuel pump and the adjustable fuel pressure regulator from Rob at Needswings. You'll get exactly what you need and have some peace of mind.

 

100%!!!

Not only this, but the back-end of these cars is so light, that with the pulley and tune, traction begins disappearing quickly.

All of your money and effort is wasted, if you can't put the power down.

 

Well for now just wanting to up the performance all around. Yeah, since I have the 65 s/c pulley already I feel I'll be happy for good while with the dcai, intake manifolds, and down pipes with cutouts.

Currently my daily and since I am home for only half the year because of work I need it to be reliable for that time. Once I decide to purchase the next vehicle then I'll just make it my drag car to take and push its limits as hard as I can.

Thanks for all the feedback!

Yeah, I probably need to get to working on getting the power to the ground after these mods alone already.

Wavetrac and ground control?

 

I'm went where you are. Once tuned, the tires would spin like crazy and I had to pay too much attention making turns at lights. So, i thought some new summer compound Kumho Ecstas on the back would help. Didn't help much. Then added a wavetrac...awesome!!! The car became balanced then. So my advice is... Don't do any more mods until/if you get the wavetrack. After doing that I added the tweaked manifolds, and a final tune fro Eurocharged. Couldn't be happier!!! Torque city.

 

Well since I ordered the parts so far. I will get those installed and get it tuned and then in time I will get the wavetrac installed.

Yeah the spinning at corners probably won't be too much fun after a while.

 

Absolutely not! My car is crap from a dig now. Handles great on track or in the twistys, just not going straight.

 

you should have enough fuel to not need a pump nor injectors yet assuming your tune is done while watching the air fuel ratio.

 

What!? Straight line your car is a dig with the wavetrac? But how?

 

Planning on getting it on the dyno and watching the afr's for sure while tuning.

 

So I know that no else is reading this but I have to post and say I am beyond pumped about my parts coming. Just waiting on the email showing they have been shipped so the real excitement can begin!

Work a month at a time so getting home and the parts getting close (hopefully) to shipping is a huge plus!

New tires will be needed soon probably

 

Well shoot.... I've been labeled a 'no one'. Lol


Keep us posted!

 

Your mistaken, were all reading and waiting for the post install euphoria.

Les

 

I'm really interested to see the result of this race! I recently put a 62mm pulley on my C32, replacing the 65mm pulley. And i hardly notice any positive difference...
A comparison with 2 cars will be quite nice